1-48 (The compiler of the book narrated) that his father - may God be pleased with him - narrated that Sa’ed ibn Abdullah quoted on the authority of Ahmad ibn Muhammad, on the authority of Abi Umayr, on the authority of Hamzih ibn Himran that Aba Abdullah as-Sadiq (as) said, “
God the Exalted the Sublime has not created any certitude in which there is no doubt similar to the doubt about death in which there is no certitude.”