(Imām Bukhārī narrates): Muslim narrated to us, he said: Shu'bah narrated to us, from 'Amr, from Jābir ibn 'Abdullāh, may Allāh be pleased with them both, that:
Mu'ādh ibn Jabal, may Allāh be pleased with him, used to pray with the Prophet ﷺ, then he would go and lead his people in prayer.
حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، قَالَ: حَدَّثَنَا شُعْبَةُ، عَنْ عَمْرٍو، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ: «أَنَّ مُعَاذَ بْنَ جَبَلٍ، كَانَ يُصَلِّي مَعَ النَّبِيِّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ، ثُمَّ يَرْجِعُ، فَيَؤُمُّ قَوْمَهُ»
Reference: Sahih Al Bukhari 700