Al-Imam Abu Abdullah Ubaid-Ullah Bin Muhammad Bin Muhammad Bin Hamadan Al-Abkari, A great scholar of Fiqh Al-Hambali and a great writer of Sunnah, and has past away in 387H.
He is Ahmad ibn Fares ibn Zakareyyah ibn Muhammad ibn Habib. Abu Al-Husein Ar-Razi Al-Qazwini is his nickname. He was born in Qazwin. He authored many books such as \”Al-Mujmal\”. The most correct opinion is that he died in 395 H.