Ilm al-Jarh wa al-Ta’dil – Studio Arabiya

It is time to read another hadith. “The Prophet said: ‘Be kind to your neighbors.’”
Good advice. Yet, on checking the narrator in the narration you notice “Muhammad ibn Yazid” among the chain. You proceed to search about him in biographical works. You read this: “He is a liar. He fabricates hadith. Abandoned by scholars.”
The advice remains beautiful. But the hadith becomes rejected. Not due to the beauty of its content. But due to the character of its transmitter.
Welcome to Ilm al-Jarh wa al-Ta’dil. The Science of Criticism and Validation. The science wherein scholars scrutinized narrators of hadith, and made their judgment known to all: “This narrator is reliable,” or “This narrator is a liar.”
Nothing political about it. Nothing soft-spoken. Nothing “we respect everyone’s opinion.”

But the brutal truth, to preserve the purity of hadith literature.
I used to wonder: “Isn’t it backbiting? Doesn’t the scholar risk harming the other person?” Until I came to know: No, it’s not backbiting. Not when it comes to religion.
To protect what is most dear to us, we cannot afford backbiting. Nor can we afford the harm of lying and fabrication.
Let me show you how scholars navigated this delicate balance. Honoring the trustworthy. Exposing the unreliable. All for one purpose: preserving authentic Islam.
What Is Ilm al-Jarh wa al-Ta’dil?
Jarh: Criticism. Identifying weaknesses in narrators. Wounding their credibility.
Ta’dil: Validation. Affirming trustworthiness. Vouching for their reliability.
The Science: Systematic evaluation of every hadith narrator. Documenting their strengths and weaknesses. Grading their reliability.
The Purpose: To separate authentic narrations from weak or fabricated ones by evaluating who’s narrating them.
Think of it as quality control for religious knowledge. You wouldn’t accept food without checking expiration dates. You shouldn’t accept religious guidance without checking narrator reliability.
The Stakes:
If one liar’s narration enters Islamic law, Muslims worldwide could practice falsehood thinking it’s Sunnah. Prayer rulings. Fasting details. Marriage laws. Inheritance rules. All based on what? A fabrication.
The scholars understood: We cannot afford to be wrong here. This is the Prophet’s legacy. We must investigate ruthlessly.
Dr. Yasir, my hadith teacher, said: “Students always ask: ‘Isn’t calling someone unreliable too harsh?’ I ask them: ‘If a doctor knows another doctor is incompetent and kills patients, should he stay silent? Or warn people?’ They say: ‘Warn people.’ I say: ‘Exactly. These scholars weren’t destroying reputations. They were saving souls.’”
The Balance: When Criticism Is Allowed
Islamic scholarship has strict rules against backbiting, slander, and destroying reputations.
But Ilm al-Jarh wa al-Ta’dil created an exception. A necessary exception.
The Prophetic Permission:
When the Prophet was asked about someone, he sometimes revealed their flaws if it served a religious purpose.
A man asked permission to marry a certain woman. The Prophet said: “She is poor and has nothing.” Honest assessment, not slander.
Another time, he warned: “What about such-and-such person? He is deceitful.”
The principle: When truth serves a religious benefit, honesty overrides protecting feelings.
The Scholarly Consensus:
All major scholars agreed: In matters of hadith narration, we must be honest about narrator reliability.
The Conditions:
- Intention must be pure: Protecting the religion, not personal vendetta
- Based on investigation: Not rumors or personal dislike
- Accurate and fair: Not exaggerating or minimizing
- For religious necessity: Not just gossip
- Proportional: Only stating what’s needed
What’s NOT Allowed:
- Criticizing narrators due to personal conflicts
- Exaggerating weaknesses
- Hiding someone’s strengths when criticizing
- Criticizing without evidence
- Using harsh language unnecessarily
The scholars walked a fine line. Honest, but not cruel. Critical, but not vindictive. Protective of truth, but also of justice.
Ahmed asked me: “How did they ensure it wasn’t just personal attacks?”
Good question. They had rules:
- Multiple scholars must agree before severe criticism accepted
- The criticized person’s defenders were heard
- Specific evidence required (“I saw him lie” not “people say he lies”)
- Conflicts of interest noted (teacher-student disputes, tribal feuds)
The Categories: Levels of Criticism and Validation
Scholars didn’t just say “good” or “bad.” They created precise grading scales.
Ta’dil (Validation) – Six Levels from Highest to Lowest:
Level 1: The Highest
- “The most trustworthy of people”
- “An ocean [of knowledge]”
- “The proof”
- Example: Malik ibn Anas, Al-Zuhri
Level 2: Very Strong
- “Trustworthy, firm”
- “Trustworthy, precise (thabt)”
- Example: Sufyan al-Thawri, Shu’bah
Level 3: Strong
- “Trustworthy”
- “No problem with him”
- Example: Thousands of narrators at this level
Level 4: Acceptable
- “Truthful” (sadooq)
- “There is no harm in him”
- Close to acceptable but not quite “trustworthy”
Level 5: Light Validation
- “He is fine”
- “His hadith is written”
- Acceptable but with reservations
Level 6: Minimal
- “Not far from truthfulness”
- Barely acceptable
Jarh (Criticism) – Six Levels from Lightest to Severest:
Level 1: Very Light
- “Soft in hadith”
- “There is something in him”
- Minor concern, still might be used
Level 2: Light
- “His hadith is written but not used as proof”
- “Weak in hadith”
- Can be used for supporting evidence
Level 3: Moderate
- “Weak”
- “He makes mistakes”
- Generally not used
Level 4: Strong
- “Very weak”
- “Abandoned”
- His hadith is rejected
Level 5: Very Strong
- “He lies”
- “Accused of lying”
- Completely rejected
Level 6: The Severest
- “Forges hadith”
- “Fabricator”
- Warning issued against him
These precise terms allowed scholars across centuries and continents to communicate exactly what they meant.
When Imam Bukhari said someone was “trustworthy, firm,” every other scholar knew exactly what level of reliability that represented.
Fatima told me: “Learning these levels was like learning a new language. ‘Weak’ doesn’t mean ‘liar.’ ‘Truthful’ doesn’t mean ‘trustworthy.’ Each term has specific meaning. Once I learned them, I could read classical hadith evaluations and actually understand what scholars were saying.”
The Process: How Narrators Were Evaluated
Scholars didn’t casually throw around these terms. There was methodology.
Step 1: Gather Information
- Interview the narrator if possible
- Interview their students and teachers
- Check other scholars’ opinions
- Investigate their life and character
- Test their memory and accuracy
Step 2: Examine Two Qualities
‘Adalah (Integrity/Character):
Is this person:
- Muslim?
- Sane?
- Honest (not known for lying)?
- Religiously upright (avoids major sins)?
- Maintains dignity?
Dabt (Precision/Memory):
Can this person:
- Accurately memorize what they heard?
- Retain it over time?
- Narrate it correctly?
- Avoid mixing up narrations?
Both required. Honesty without memory = unreliable. Memory without honesty = unreliable.
Step 3: Compare Narrations
Does this narrator’s version match what others narrated? Or does he uniquely narrate strange things?
Consistency with other trustworthy narrators = validation. Contradicting reliable narrators = criticism.
Step 4: Check for Hidden Agendas
- Does he narrate to support a sect?
- Does he change wording to support his position?
- Does he attribute his own opinions to the Prophet?
Step 5: Document and Publish
Write it down. Make it available. Let other scholars verify or challenge.
This wasn’t one person’s opinion. This was scholarly consensus built over decades of investigation.
Omar shared: “I found a narrator I wanted to use. One scholar said ‘weak.’ Another said ‘acceptable.’ I was confused. Then I learned: check dates. The ‘acceptable’ opinion was early in his career. The ‘weak’ was later, after scholars investigated more deeply. Later opinions usually more accurate because more evidence accumulated. Context matters.”
Famous Examples: The Validated and the Criticized
Let me show you real cases.
The Validated: Abu Huraira
His Status: Most prolific narrator. 5,374 hadiths attributed to him.
Early Criticism: Some people questioned: “How does one man know so many hadiths? Others who spent more time with the Prophet narrated less!”
The Investigation:
Scholars investigated thoroughly:
- He explicitly asked the Prophet: “Pray that Allah helps me memorize.” The Prophet prayed for him.
- He was poor, unmarried, stayed constantly with the Prophet
- Other companions had businesses, families, travel. He had the Prophet.
- He dedicated his life to memorization and narration
- His narrations, when checked, were accurate and consistent
The Verdict: Trustworthy. Firm. His narrations accepted by Bukhari, Muslim, and all major collectors.
The Lesson: Initial questions are fine. Investigation is necessary. But when evidence supports reliability, criticism must yield to validation.
The Criticized: Al-Waqidi (Muhammad ibn Umar)
His Background: Historian. Author of famous books on maghazi (military expeditions).
The Problem: Scholars investigated his hadith narrations. Found serious issues.
The Evaluations:
- Imam Ahmad: “He is a liar”
- Imam Bukhari: “He is abandoned”
- Imam Nasa’i: “He is abandoned”
- Ibn Ma’in: “Not trustworthy”
The Specifics: He would narrate hadiths with complete chains that no one else knew. Strange details others didn’t mention. Suspicion of fabrication.
The Result: His hadiths rejected for Islamic rulings. His historical works used with caution (for general history, not for fiqh).
The Lesson: Fame doesn’t equal reliability. He wrote famous books. But his hadith narrations? Rejected.
The Complex Case: Ikrimah (Freed Slave of Ibn Abbas)
His Status: Student of Ibn Abbas. Knowledgeable. Many narrations.
The Controversy: Some scholars accepted him. Others criticized him.
The Criticism:
- Accused of supporting Khawarij sect
- Some questioned his memory
- Some disputed his character
The Defense:
- Many trustworthy scholars learned from him
- Ibn Abbas trusted him
- Much of his knowledge was valuable
The Verdict: Scholarly disagreement. Some accept his narrations with caution. Others more accepting. Depends on which scholarly tradition you follow.
The Lesson: Not all cases are black and white. Sometimes scholars disagree. That’s okay. Document the disagreement. Let people decide based on evidence.
Ibrahim told me: “The Ikrimah case taught me: Islamic scholarship isn’t monolithic. Scholars can respectfully disagree on narrator evaluation. Both sides present evidence. Both sides respected. That’s intellectual honesty.”
The Ethics: How Scholars Criticized
Even when criticizing, scholars maintained ethics.
Rule 1: State Only What’s Necessary
Don’t list every flaw. State what’s relevant to hadith reliability.
If someone drank alcohol once in youth, then repented and became righteous, mention the repentance too. Don’t just say “he drank alcohol.”
Rule 2: Be Specific
Not “he’s bad.” But “he makes mistakes in narration from X” or “he is weak when narrating from Y.”
Rule 3: Allow Defense
The criticized person or their defenders could respond. Scholars listened to both sides.
Rule 4: Note Scholarly Disagreement
“Some scholars accepted him. Others rejected him. The majority leaned toward rejection.”
Transparency. Not hiding that there’s difference of opinion.
Rule 5: Distinguish Between Narrator Flaws and Personal Flaws
A narrator might be weak in memory but excellent in character. Or vice versa. Be clear which is which.
The Golden Rule:
Imam al-Dhahabi said: “We do not deem anyone among the Muslims to be pure from all defects. So we speak about what is essential regarding narrators only.”
This wasn’t character assassination. This was necessary documentation for preserving truth.
Why This Science Matters Today
“This is ancient history. Why should I care?”
Because you encounter hadiths constantly. How do you know which to trust?
Practical Application:
1. Verifying Online Hadiths
Someone shares a hadith on social media. No source. No chain. Just “The Prophet said…”
With knowledge of Jarh wa Ta’dil, you think: “Who narrated this? Let me check.”
You find the chain. See a narrator who’s “abandoned” or “liar.” Reject it.
2. Understanding Scholar Differences
Imam X accepted a hadith. Imam Y rejected it. Why?
Often because they had different evaluations of a narrator in the chain. Understanding Jarh wa Ta’dil helps you understand why scholars disagree.
3. Appreciating Preservation
This science shows the lengths scholars went to preserve authentic Islam. They investigated half a million narrators. Documented everything. All to protect the Prophet’s legacy.
4. Building Critical Thinking
Don’t just accept any statement attributed to Islam. Verify. Check narrators. Think critically. That’s what this science teaches.
Zaynab shared: “I used to share every ‘Islamic quote’ I saw online. Then I learned about narrator criticism. Now I check. Half the quotes I used to share? Fabricated. Weak narrators. Or not even from hadith collections at all. This science saved me from spreading falsehood.”
The Books: Where to Find These Evaluations
Scholars compiled massive works documenting narrator evaluations.
Major Works:
- Al-Jarh wa al-Ta’dil by Ibn Abi Hatim
- Tahdhib al-Tahdhib by Ibn Hajar
- Mizan al-I’tidal by al-Dhahabi (focuses on criticized narrators)
- Taqrib al-Tahdhib by Ibn Hajar (shorter, more accessible)
- Tadhkirat al-Huffaz by al-Dhahabi
These books are where you look up narrators. Find their biography. See their evaluation.
Want to know if “Muhammad ibn Yazid” is trustworthy? Look him up. These books tell you.
Conclusion: Truth Over Feelings
Ilm al-Jarh wa al-Ta’dil makes some people uncomfortable. “Why publicly criticize people? Isn’t that harsh?”
But consider the alternative.
Without this science:
- Anyone could fabricate hadiths unchallenged
- Weak memory narrators would be treated like strong ones
- Liars would be believed
- The Prophet’s words would mix with human invention
The scholars chose truth over comfort. Honesty over politeness. Protection over popularity.
They documented: “This narrator is trustworthy. This one is a liar. This one has weak memory. This one is firm.”
Was it harsh? Sometimes. Was it necessary? Absolutely.
Because the stakes weren’t just hurt feelings. The stakes were eternal guidance.
Every Muslim for 1,400 years has benefited from this science. Every time you trust a sahih hadith, thank the scholars who investigated the narrators. Every time you reject a weak narration, thank the scholars who exposed the unreliable narrators.
They didn’t do it to be mean. They did it to be truthful. And truth, even when harsh, is mercy.
May Allah reward the scholars who dedicated their lives to this science. May He grant us the wisdom to appreciate their work. And may we never attribute to the Prophet what he didn’t say.
Truth matters. Verification matters. Narrator criticism matters.
That’s Ilm al-Jarh wa al-Ta’dil. The science that called out liars and honored the truthful.
For the sake of protecting what the Prophet actually said.

