Ahmad ibn Hanbal
Hadith

It is reported that Ibn Hanbal has reached the title of al Hafidh of Hadith according to Jamal al-Din al-Mizzi classification, as the title bestowment were approved by Ibn Hajar al-Asqalani that Ibn Hanbal has memorized at least 750,000 hadith during his life, more than Muhammad al-Bukhari and Muslim ibn al-Hajjaj who each memorized 300,000 hadith, and Abu Dawud al-Sijistani who memorized 500,000 hadith. Abu Zur'ah mentions that Ibn Hanbal has memorized 1,000,000 hadith, 700,000 among them are related to jurisprudence.

While according to the classification from Marfu' Hadith of Ibn Abbas which recorded by Al-Tabarani, Ibn Hanbal has reached the rank of Amir al-Mu'minin al-Hadith, a rank that only reached by very few Hadith scholars in history such as Malik ibn Anas, Yahya ibn Ma'in, Hammad ibn Salamah, Ibn al-Mubarak, and Al-Suyuti. Ibn Hanbal's Musnad is not, however, ranked among the Kutub al-Sittah, the six big collections of hadith.
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