Ubayd Allah ibn Hasan ibn Husayn ibn Malik ibn al-Khashkhash عبيد الله بن حسن بن حصين بن مالك بن الخشخاش

Name: Ubayd Allah ibn Hasan ibn Husayn ibn Malik ibn al-Khashkhash

Fame: Ubayd Allah ibn al-Hasan al-Tamimi

Lineage: al-Basri, al-Anbari, al-Tamimi

Occupation: Judge

Rank: Trustworthy

Lived in: Baghdad

Born Year: 100

Died Year: 168

Abu Dawud al-Sijistani: Ubayd Allah ibn al-Hasan is considered an authority. He said he was a jurist.

Ahmad ibn Shu'ayb al-Nasa'i: Trustworthy

Ibn Hajar al-'Asqalani: Trustworthy jurist. He was criticized for his stance on the equivalence of evidence.

al-Khatib al-Baghdadi: Trustworthy

al-Wathiq ibn Yusuf: I have never seen a man more intelligent than Ubayd Allah ibn al-Hasan ibn al-Husayn

Muhammad ibn Sa'd, the scribe of al-Waqidi: He was praiseworthy, trustworthy, and intelligent

Authors of Tahrir Taqrib al-Tahdhib: The issue of equivalence of evidence is his saying: Every Mujtahid (scholar who strives to extract rulings from Islamic sources) is correct in the fundamentals of religion, such as the Qadariyyah and the Jabariyyah. This is not detrimental to his righteousness.