(50) باب مَا جَاءَ فِي الْجَمَاعَةِ فِي مَسْجِدٍ قَدْ صُلِّيَ فِيهِ مَرَّةً
Abu Sa'eed narrated:
"A man came when Allah's Messenger had already prayed, so he said: 'Which of you will give some reward to this person?' So a man stood to pray with him." (ES)
Reference (ES): Jami` at-Tirmidhi 220 (ES)
In-book reference (ES): Book 2, Hadith 72 (ES)
English translation (ES): Vol. 1, Book 2, Hadith 220 (ES)