632Sahih BukhariSahihحَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، قَالَ أَخْبَرَنَا مَالِكٌ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ صَلاَةُ الْجَمَاعَةِ تَفْضُلُ صَلاَةَ الْفَذِّ بِسَبْعٍ وَعِشْرِينَ دَرَجَةً "Narrated `Abdullah bin `Umar:Allah's Messenger (ﷺ) said, "The prayer in congregation is twenty seven times superior to the prayer offered by person alone."Reference: Sahih al-Bukhari 645 In-book : Book 10, Hadith 42 USC-MSA web (English) : Vol. 1, Book 11, Hadith 618 (deprecated)