4-137 (The compiler of the book narrated) that his father and Muhammad ibn al-Hassan - may God be pleased with them - narrated that Ahmad ibn Idris and Muhammad ibn Yahya al-Attar quoted Muhammad ibn Ahmad ibn Yahya, on the authority of Muhammad ibn al-Hussein, on the authority of Ahmad ibn Ali, on the authority of Abi Khalid Zayd ibn Mihran, on the authority of Muhammad ibn Abdul Jab’bar, on the authority of Al-Hussein ibn Zayd, “It has been reported to me that the Honorable the Exalted God has created horses from four things: the great ocean encompassing the world; fire; tears of an angle called Ibrahim and a clean well.”This is a part of a long narration. Here only a short part of it is cited due to its length.