Everything in this book that is narrated from Al-Hasan ibn Ziyad has been transmitted by me from Muhammad ibn Musa ibn Al-Mutawakkil - may Allah (swt) be pleased with him - from Ali ibn Al-Husayn Al-Sa'dabadi, from Ahmad ibn Abi Abdullah Al-Barqi, from his father, from Yunus ibn Abd Al-Rahman, from Al-Hasan ibn Ziyad Al-Sayqal. He was a Kufan, a freed servant (mawla), and his kunya was Abu Al-Walid.