Ubeidollāh Ibn Abi Rāfi and al-Sunan wal Ahkām wal Qadhāyā

One of the old Imamate works is Ubeidollah Ibn Abi Rafi’s al-Sunan wal Ahkam wal Qadhaya, a well-known work whose text existed independently till the fourth or perhaps the fifth century. Nevertheless in the circles of Imamate hadith, especially the four Books, the book has not been cited and in other Imamate books of hadith only three narrations rare elated in whose chains the name of Ubeidollah is mentioned. In the present article it is demonstrated that probably his book is the same Al-Sunan wal Ahkam wal Qadhaya by Muhammad Ibn Qays al-Bajali (died AH 151), which is the text of Ibn Rafi’s book showed to Imam al-Baqir, peace be upon him, with some narrations from him added to the book by Muhammad Ibn Qays al-Bajali.