Sunan al-Nasa'i — The Book of Leading the Prayer (Al-Imamah)

“Ziyad delayed the prayer, then Ibn Samit came to me and I gave him a chair and he sat on it. I told him what Ziyad had done and he bit his lip (in disapproval), and he struck me on the thigh and said: ‘I asked Abu Dharr the same question you asked me, and he struck me on the thigh as I struck you on the thigh and said: I asked the Messenger of Allah (ﷺ) the same question as you have asked me and he struck me on the thigh as I have struck you on the thigh and said: Offer the prayer on time, and if you catch up with them, then pray with them, and do not say: ‘I have already prayed so I will not pray(now).”‘

“I came to the Messenger of Allah (ﷺ) with a cousin of mine” – once he said, “with a friend of mine” – and he said: ‘When you travel, call the Adhan and Iqamah, and let the older of you lead the prayer.'”

Allah’s Messenger said: “The one who recites most of the Book of Allah is to lead the people (in prayers). If they are equal in recitation, then the most knowledgeable in the Sunnah among them. If they are equal regarding the Sunnah, then the earliest of them to emigrate. If they are equal in their emigration then the eldest among them. And a man is not to be led in prayer in the place of his authority, and his spot of esteem in his home is not to be sat on without his permission.”

from Anas bin Malik that the Messenger of Allah (ﷺ) said: “The rewards for my Ummah were displayed before me, even (the reward for) the dust that a man comes out of the Masjid with. The sins of my Ummah were displayed before me, and I have not seen a sin worse than a Surah or Ayah of the Qur’an which a man learned and then forgot.”

It was narrated from Ibn ‘Umar that he used to go out to the ‘Eid prayers via one route, and return via another, and he said that the Messenger of Allah (ﷺ) used to do that.