Mishkat al-Masabih 4 Prayer كتاب الصلاة 567

عَنْ جَابِرٍ قَالَ: كَانَ مُعَاذُ بْنُ جَبَلٍ يُصَلِّي مَعَ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ثُمَّ يَأْتِي قومه فَيصَلي بهم

Jabir said that Muadh b. Jabal would pray along with the Prophet, then go to his people and lead them in prayer. (Bukhari and Muslim.)