"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.'" (Using translation from Ibn Mājah 789)
قَالَ رَسُولُ اللهِ ﷺ صَلَاةُ الْجَمَاعَةِ تَفْضُلُ صَلَاةَ أَحَدِكُمْ بِسَبْعٍ وَعِشْرِينَ دَرَجَةً