Everything in this book that is narrated from Al-Husayn ibn Abi Al-'Ala has been transmitted by me from my father - may Allah سبحانه وتعالى be pleased with him - from Sa'd ibn Abdullah, from Muhammad ibn Al-Husayn ibn Abi Al-Khattab, from Musa ibn Sa'dan, from Abdullah ibn Abi Al-Qasim, from Al-Husayn ibn Abi Al-'Ala Al-Khaffaf, the freed servant (mawla) of Banu Asad.