Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) said: A man entered the mosque after the Messenger of Allah (peace and blessings be upon him) had finished leading the prayer. He (peace and blessings be upon him) said: "Will anyone give charity to this man by praying with him?"
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5012
Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) said: A man came after the Prophet (peace and blessings be upon him) had prayed, and he (peace and blessings be upon him) said: "Who will give charity to this man?" Then a man prayed with him.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5013
Al-Hasan (may Allah have mercy on him) said regarding this hadith that it was Abu Bakr (may Allah be pleased with him) who prayed with him, although he had already prayed with the Prophet (peace and blessings be upon him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5014
Abu Uthman al-Yashkuri (may Allah have mercy on him) said: We prayed the morning prayer in the mosque of Banu Rifa'ah and sat down. Then Anas bin Malik (may Allah be pleased with him) came with twenty young men and said: "Have you prayed?" We said: Yes. So Anas (may Allah be pleased with him) ordered one of the young men to give the call to prayer; he gave the adhan and the iqamah, then Anas went forward and led them in prayer.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5015
Abu Uthman (may Allah have mercy on him) said: Anas (may Allah be pleased with him) came to us when we had already prayed, and he gave the adhan and the iqamah and led his companions in prayer.
And it is narrated from Yunus from al-Hasan that he disliked this. Al-Bayhaqi said: Al-Hasan al-Basri's dislike is understood to refer to a place where holding a congregation after the prayer has already been prayed would cause division among the people. And Allah knows best.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5016