MUHAMMAD’S TEACHINGS TO MANKIND
“ The Messenger of God, peace and blessings of God be upon him, said, "Shall I tell you about the gravest of the grave sins?" We replied, "Yes, Messenger of God." He said, "Associating [partners] with God and being undutiful towards parents." He then sat up from his leaning position and said, "And false testimony or false statement!" The Messenger of God, peace and blessings of God be upon him, kept repeating it until we wished he would stop. ”