´It was narrated that Ibn 'Umar said:` "The Messenger of Allah said: 'The prayer of a man in congregation is twenty-seven levels more virtuous than a man's prayer on his own.'"
Hadith ReferenceSunan Ibn Majah / The Book On The Mosques And The Congregations / Hadith: 789
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم