Wikipedia
Abu l-Hasan ′Ali ibn ′Umar ibn Ahmad ibn Mahdi ibn Mas′ud ibn al-Nu′man ibn Dinar ibn ′Abdullah al-Baghdadi al-Daraqutni (918 CE/306 AH, Baghdad — 995 CE/385 AH) was an eminent Muslim scholar and muhaddith (collector of hadiths).
Ad-Daraqutni was born in the year 918 (306 according to the Muslim calendar) in the Dar al-Qutn quarter of Baghdad , where he got his nisba al-Daraqutni. Since childhood, he studied with Abul-Qasim al-Baghawi, Abu Bakr ibn Abu Dawud, Abu Bakr ibn Ziyad al-Naysaburi, Abu Ubaid al-Qasim (his brother) and many other scholars.
His learning was so wide that many scholars felt there was no one like him. Khatib al-Baghdadi referred to him as "the imam of his time" and Abu'1-Tayyib al-Tabari (d. 450/1058) called him Amir al-Mu'minin in Hadith for which he was specially famous. He taught Hadith to Hakim al-Nishaburi (d.405/1014) and Abu'l-Hasan Isfaraini (d. 406/1015).
He died in 385/995 and was buried in the cemetery of Bab al-Dayr near the grave of Maruf Karkhi.