Uthman bin Sa`eed Ad-Darimi, full name is Al-Hafidh Uthman bin Saeed bin Khalid Ad-Darimi As-Sijistani. He lived in Herat, and traveled many regions; he traveled to Hijaz, Iraq, Sham , Egypt, and other countries. He stayed in Jurjan in 273 H. He met in those lands the prominant Huffadh (scholars of hadith) Tarikh Jurjan (1/298)
He learned Hadith and its sciences from:
- Imam Ahmad bin Hanbal
- His son: Muhammad bin Uthman.
- Ibn Hibban mentioned him in Thiqat (Trustworthy ones), and said: "One of the Imams of the world, he narrates from Abu al Waleed and the people of Iraq." Ath-Thiqat by Ibn Hibban (8/455)
Adh-Dhahabisaid about him: "The Imam, Allamah, the Hafidh, the Critic ... he was persevere upon the Sunnah, and well-versed in debating."Siyar A'lam Nubala (13/320 & 322-323)
- A large Musnad (19)
He passed away in Dhul Hijjah, 280 Hijri.