Clarification of the Transmission Chain to Muhammad Ibn yaʿqub Al-Kulayni

And whatever is narrated from Muhammad ibn Al-Husayn ibn Abi Al-Khaṭṭab, I have narrated it from my father and from Muhammad ibn Al-Hasan - may Allah سبحانه وتعالى be pleased with them - from Saʿd ibn Abdullah, and Al-Himyari, and Muhammad ibn Yahya, and Ahmad ibn Idris, all together from Muhammad ibn Al-Husayn ibn Abi Al-Khaṭṭab Al-Zayyat, whose father's name was Zayd.