who is muaz bin jabal?
Muadh ibn Jabal (Arabic: مُعاذ بن جبل‎; 603 – 639) was a sahabi (companion) of the Islamic prophet Muhammad. Muadh was an Ansar of Banu Khazraj and compiled the Quran with five companions while Muhammad was still alive. ... He was called by Muhammad "the one who will lead the scholars into Paradise."