Everything in this book that is narrated from Dawud ibn Al-Husayn has been transmitted by me from my father and from Muhammad ibn Al-Hasan - may Allah (swt) be pleased with them both - from Sa'd ibn Abdullah, from Muhammad ibn Al-Husayn ibn Abi Al-Khattab, from Al-Hakam ibn Miskin, from Dawud ibn Al-Husayn Al-Asadi, who was a freed servant (mawla).