Everything in this book that is narrated from Hammad ibn Isa has been transmitted by me from my father - may Allah (swt) be pleased with him - from Sa'd ibn Abdullah, from Ibrahim ibn Hashim and Ya'qub ibn Yazid, from Hammad ibn Isa Al-Juhani. I have also narrated it from my father - may Allah (swt) be pleased with him - from Ali ibn Ibrahim ibn Hashim, from his father, from Hammad ibn Isa.