Comes from the Holy Quran – Sura (chapter)3: Ayat (Verse) 104

وَلْتَكُنْ مِنْكُمْ أُمَّةٌ يَدْعُونَ إِلَى الْخَيْرِ وَيَأْمُرُونَ بِالْمَعْرُوفِ وَيَنْهَوْنَ عَنِ الْمُنْكَرِ ۚ وَأُولَٰئِكَ هُمُ الْمُفْلِحُونَ

“Let there arise out of you a band of people inviting to all that is good enjoining what is right and forbidding what is wrong; they are the ones to attain felicity.”