Clarification of the Transmission Chain to Al-Husayn Ibn Said

Everything in this book that is narrated from Al-Husayn ibn Said has been transmitted by me from Muhammad ibn Al-Hasan - may Allah (swt) be pleased with him - from Al-Husayn ibn Al-Hasan ibn Aban, from Al-Husayn ibn Said. I have also narrated it from my father - may Allah (swt) have mercy on him - from Sad ibn Abdullah, from Ahmad ibn Muhammad ibn Isa, from Al-Husayn ibn Said.