Abu Umama reported that a man entered the masjid and began to pray, so the Messenger of Allah ﷺ said, "Is there no one who will show this man a kindness and pray alongside him?"A man then stood up and prayed with him, and the Messenger of Allah ﷺ said, "These two are a congregation." And he said, "These two are a congregation."
حدثنا هشام بن سعيد حدثنا ابن المبارك عن يحيى بن أيوب عن عبيد الله بن زحر عن علي بن يزيد عن القاسم عن أبي أمامة عن النبي ﷺ نحوه وقال هذان جماعة