حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ عُمَرَ، رُسْتَهْ حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ عُمَرَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " صَلاَةُ الرَّجُلِ فِي جَمَاعَةٍ تَفْضُلُ عَلَى صَلاَةِ الرَّجُلِ وَحْدَهُ بِسَبْعٍ وَعِشْرِينَ دَرَجَةً " .
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.'" Translation Not Available
Book Ref: Sunan Ibn Majah Book 4 Hadith 789
Web Ref: Sunan Ibn Majah Vol 1 Book 4 Hadith 789