The Prophet (ﷺ) said: There are three types of people whose prayer is not accepted by Allah: One who goes in front of people when they do not like him; a man who comes dibaran, which means that he comes to it too late; and a man who takes into slavery an emancipated male or female slave.

The obligatory prayer is essential behind every Muslim, pious or impious, even if he has committed a sins.

Anas said that the Prophet (ﷺ) appointed Ibn Umm Maktum as substitute to lead the people in prayer, and he was blind.

Malik b. al-Huwairith came to this place of prayer of ours, and the iqamah for prayer was called. We said to him: Come forward and lead the prayer. He said to us: Put one of your own men forward to lead you in prayer. I heard the Messenger of Allah(ﷺ) say: If anyone visits people, he should not lead them in prayer, but some person of them should lead the prayer.

Hudhaifah led the people in prayer in al-Mada’in standing on the shop(or a bench). Abu Mas’ud took him by his shirt, and brought him down. When he( Abu Mas’ud) finished his prayer, he said: Do you not know that they(the people) were prohibited to do so. He said: Yes, I remembered when you pulled me down.

‘Ammar came forward and stood on a shop (or a beach) and prayed while the people stood on a lower place than he. Hudaifah came forward and took him by the hands and Ammar followed him till Hudaifah brought him down. When ‘Ammar finished his prayer. Hudaifah said to him: Did you not hear the Messenger of Allah (May peace be upon him) say: When a man leads the people in prayer, he must not stand in a position higher than theirs, or words to that effect? ‘Ammar replied : that is why I followed you when you took me by the hand.

Mu’adh b. Jabal would pray along with the Messenger of Allah (ﷺ)in the night prayer, then go and lead his people and lead them in the same prayer.