Sunan Abi Dawud Book 2, Hadith 189
Sulayman, the freed slave of Maymunah, said: I came to Ibn Umar at Bilat (a place in Medina) while the people were praying. I said: Do you not pray along with them? He said: I heard the Messenger of Allah (ﷺ) say: Do not say a prayer twice in a day.
if one of us prays in his house, then comes to the mosque and finds that the iqamah is being called, and if I pray along with them ( in congregation), I feel something inside about it. Abu Ayyub replied: We asked the Prophet (ﷺ) about it. He said: That is a share from the spoils received by the warriors (i.e. he will receive double the reward of the prayer).
I heard the Messenger of Allah (ﷺ) say: He who leads the people in prayer, and he does so at the right time, will receive, as well as those who are led (in prayer) will get (the reward). He who delays (prayer) from the appointed time will be responsible (for this delay) and not those who are led in prayer.