(56) باب فِي الْجَمْعِ فِي الْمَسْجِدِ مَرَّتَيْنِ
Narrated Sa'id al-Khudri:
The Messenger of Allah (ﷺ) saw a person praying alone. He said: Is there any man who may do good with this (man) and pray along with him.
Reference: Sunan Abi Dawud 574
In-book reference: Book 2, Hadith 184
English translation: Book 2, Hadith 574