Malik b. al-Huwairith said that the Prophet( may peace be upon him) told him or some of his companions:

When the time of prayer comes, call the Adhan, then call the iqamah, then the one who is oldest of you should act as your imam. The version narrated by Maslamah goes : He said: On that day we were almost equal in knowledge. The version narrated by Isma’il says: Khalid said: I said to Abu Qilabah…

This tradition has also been narrated through a different chain of transmitters by Umm Waraqah daughter of ‘Abd Allah b. al-Harith. The first version is complete. This version goes:

The Messenger of Allah(ﷺ) used to visit her at her house. He appointed a mu’adhdhin to call adhan for her; and he commanded her to lead the inmates of her house in prayer. ‘Abd al-Rahman said: I saw her mu’adhdhin who was an old man.

Narrated Abdullah ibn Umar:

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.

Abu Hurairah reported the Messenger of Allah(ﷺ) as saying:

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.

Abu ‘Atiyyah, a freed slave of us, said:

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.

Hammam said:

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.

‘Adi b. Thabit al-Ansari said; A man related to me that (once) he was in the company of ‘Ammar b. yasir in al-Mada’in (a city near Ku’fah). The IQAMAH was called for prayer:

‘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 Messenge…

Jabir b. ‘Abd Allah said :

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.

Jabir b. ‘Abd Allah said :

Mu’adh b. Jabal would pray along the prophet (ﷺ), then go and lead his people in prayer.

Narrated Jabir ibn Abdullah:

The Messenger of Allah (ﷺ) rode a horse in Medina. It threw him off at the root of a date-palm. His foot was injured. We visited him to inquire about his illness. We found him praying sitting in the apartment of Aisha. We, therefore, stood, (praying) behind him. He kept silent. We again visite…

Anas said:

The Messenger of Allah (ﷺ) entered upon Umm Haram. The people (in her house) brought some cooking oil dates to him. He said; Put it (dates) back in its container and return it (cooking oil) to its bag, because I am keeping fast. He then stood and led us in prayer two Rak’ahs of supererogatory prayer. Then Umm Sulaim and Umm Haram stood behind us (i.e., the men). Thabit (the narrator) said: I understand that Anas said; he (the prophet) made me stand on his right side.

Anas said:

The Messenger of Allah (ﷺ) led him and one of their women in prayer. He (the prophet) put him on his right side and the woman behind him (Anas)

‘Abd Allah b. ‘Abbas said :

when I was spending a night in the house of my maternal aunt Maimunah, the Messenger of Allah (ﷺ) got up at night, opened the mouth of the water skin and performed ablution. He then closed the mouth of the water-skin and stood for prayer. Then I got up and performed ablution as he did ; then I came and stood on his left side. He took my hand, turned me round behind his back and set me on his right side; and I prayed along with him.

Anas b. Malik said that his grandmother Mulaikah the Messenger of Allah (ﷺ) to take meals which she prepared for him. He took some of it and prayed. He said :

Get up, I shall lead you in prayer. Anas said: I got up and took a mat which had become black on account of long use. I then washed it with water. The Messenger of Allah (ﷺ) stood upon it. I and the orphan (Ibn Abi Dumairah, the freed slave of the prophet) stood in a row behind him. The old women st…

Narrated Yazid ibn al-Aswad:

Jabir ibn Yazid ibn al-Aswad reported on the authority of his father: I prayed behind the Messenger of Allah (ﷺ). When he finished the prayer, he would turn (his face from the direction of the Ka'bah).

Narrated Mughirah ibn Shu'bah:

The Prophet (ﷺ) said: The Imam should not pray at the place where he led the prayer until he removes (from there). Abu Dawud said: 'Ata' al-Khurasani did not see Mughirah b. Shu'bah (This tradition is, therefore munqati', i.e. a link is missing in the chain).

Narrated Abdullah ibn Amr ibn al-'As:

The Prophet (ﷺ) said: When the Imam completes the prayer and sits (for reciting tashahhud), and then becomes defiled (i.e. his ablution becomes void) before he speaks (to someone), his prayer becomes complete. And those who prayed behind him also complete the prayer.

Narrated Ali ibn AbuTalib:

The Prophet (ﷺ) said: The key of prayer is purification; takbir (saying "Allah is most great") makes (all acts which break prayer) unlawful and taslim (uttering the salutation) makes (all such acts) lawful.

Al-Bara who is not a liar said; when they (the companions) raised their heads from bowing along with the Messenger of Allah (ﷺ), they would stand up, and when they saw him that he went down in prostration, they would prostrate (following the prophet).