 أَبِی ره قَالَ حَدَّثَنِی سَعْدُ بْنُ عَبْدِ اللَّهِ عَنْ مُحَمَّدِ بْنِ عَرَفَهَ قَالَ سَمِعْتُ الرِّضَا ع یَقُولُ إِذَا تَرَکَ امْرُؤٌ الْأَمْرَ بِالْمَعْرُوفِ وَ النَّهْیَ عَنِ الْمُنْکَرِ فَلْیَأْذَنْ
1.  Imam Ridha narrates that the Holy Prophet (s.a.w.s.) said, “When my community stops enjoining good and restraining from evil, it should be prepared to wage war against Allah, hallowed be His name.”