15-7 (The compiler of the book narrated) that his father and Muhammad ibn al-Hassan ibn Ahmad ibn al-Walid - may God be pleased with them - narrated that Sa’ed ibn Abdullah quoted Ahmad ibn Muhammad ibn Isa, on the authority of Muhammad ibn Abi Umayr, on the authority of some friends that Aba Abdullah as-Sadiq (MGB) said, “Applying depilatory7 once every fifteen days is a tradition. You should borrow money for doing so, if you cannot apply depilatory for twenty-one days. You are neither a Muslim nor a believer, if you do not apply depilatory for more than forty days. You are not honorable either.”