On my departure from the Prophet ﷺ he said to me and to a friend of mine, "You two, pronounce the Adhan and the Iqama for the prayer and let the elder of you lead the prayer."  

انْصَرَفْتُ مِنْ عِنْدِ النَّبِيِّ ﷺ فَقَالَ لَنَا أَنَا وَصَاحِبٌ لِي أَذِّنَا وَأَقِيمَا وَلْيَؤُمَّكُمَا أَكْبَرُكُمَا