عَنِ ابْنِ عَبَّاسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لِيُؤَذِّنْ لَكُمْ خِيَارُكُمْ وليؤمكم قراؤكم» . رَوَاهُ أَبُو دَاوُد

Anas said that God’s Messenger appointed Ibn Umm Maktum as substitute to lead the people in prayer, and he was blind. Abu Dawud transmitted it.