3-134 (The compiler of the book narrated) that his father - may God be pleased with him - narrated that Sa’ed ibn Abdullah quoted Al-Haysam ibn Abi Masruq al-Nehdi, on the authority of Al-Hassan ibn Mahboob, on the authority of Ali ibn Re’ab, on the authority of Al-Halabi that he had heard Aba Abdullah as-Sadiq (MGB) say, “
A believer will not engage in lying, miserliness and adultery. It could happen that he turns to these acts, but he will not continue doing them.” The Imam (MGB) was asked, “Will he commit adultery?” The Imam (MGB) said, “Yes. He may fall into that trouble, but he would repent and no child will be born from that sperm.”