Everything in this book that is narrated from Hisham ibn Al-Hakam has been transmitted by me from my father and from Muhammad ibn Al-Hasan - may Allah سبحانه وتعالى be pleased with them both - from Sa'd ibn Abdullah and Al-Himyari together, from Ahmad ibn Muhammad ibn 'Isa, from Ali ibn Al-Hakam and Muhammad ibn Abi 'Umayr together, from Hisham ibn Al-Hakam. His kunya was Abu Muhammad, and he was a freed servant (mawla) of Banu Shayban. He was a seller of woolen garments and moved from Baghdad to Kufa.