Everything in this book that is narrated from Aban ibn Uthman has been transmitted by me from Muhammad ibn Al-Hasan - may Allah (swt) be pleased with him - from Muhammad ibn Al-Hasan Al-Saffar, from Yaqub ibn Yazid, Ayyub ibn Nuh, Ibrahim ibn Hashim, and Muhammad ibn Abd Al-Jabbar - all of them from Muhammad ibn Abi Umayr and Safwan ibn Yahya, from Aban ibn Uthman Al-Ahmar.