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Person
Hadith narrator

Yaʿqūb ibn Ibrāhīm ibn Saʿd

يعقوب بن إبراهيم الأنصاري

Abu Yusuf

729 CE – 798 CE (113 AH – 182 AH)(aged ~69) Born in Basra Died in Basra Ansar

Yaʿqūb ibn Ibrāhīm al-Anṣārī, known as Abu Yusuf, was an 8th-century Muslim jurist and a leading authority of the early Hanafi school of Islamic law, serving as the first Chief Justice under the Abbasid Caliphate.

Abu Yusuf was born in 729 CE and traced his lineage to Sa'd ibn Habta of Medina. He studied under prominent scholars including Abu Hanifa and Malik ibn Anas, becoming Abu Hanifa's foremost student. He lived in Kufa and Baghdad, where he was appointed as the first Qadi al-Qudat (Chief Justice) by Caliph Harun al-Rashid. Abu Yusuf played a crucial role in systematising and spreading Hanafi jurisprudence and authored significant works such as Kitab al-Kharaj on taxation and public finance. He held the position of Grand Qadi until his death in 798 CE. His legal opinions helped define caliphal authority and fiscal policy within the Islamic empire.

Significance

He was instrumental in consolidating and spreading the Hanafi school of Islamic law and served as the first Chief Justice under the Abbasid Caliphate.

Reputation in tradition

Highly praised in Sunni tradition as a foremost Hanafi jurist and the first Grand Qadi who advanced Islamic jurisprudence and legal administration.
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Father

Ibrahim ibn Adham (إبراهيم)
Classical grade
thiqa
Generation
Generation 4
Narrations by collection
  • sahih bukhari: 0
Why they matter in hadith

He is important for transmitting hadiths with high reliability in the 4th generation of narrators.

Sources: Wikipedia and classical Islamic biographical literature compiled by automated researchers. Every page is being continuously refined — if something looks off, please check back in a few days.