IBN ABU AD-DUNYA, ‘Abdullah bin Muhammad bin ‘Ubaid:

Abu Bakr, ‘Abdullah bin Muhammad bin ‘Ubaid bin Sufyan bin Abu Ad-Dunya Al-Qurashi Al-Baghdadi, the freed slave of Banu Umaiya, was born in 208 H. He was a Muhaddith and truthful ‘Aalim. He wrote some books and educated more than one of the caliphs’ sons like Al-Mu’tadid. Ibn Abu Ad-Dunya died in Jumada Al-Ula, 281 H.