1-87 (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 Yaqoob ibn Yazid, on the authority of Muhammad ibn Abi Umayr, on the authority of Durost ibn Abi Mansoor, on the authority of someone that Aba Abdullah as-Sadiq (MGB) said,

“The love for the world is the root of all sins.”