كتاب 10
10  
Book 10
(10)
Chapter 10
(10)
باب 10
Sahih al-Bukhari 634
Narrated `Abdullah bin `Umar:
The reward of the congregational prayer is twenty seven times greater (than that of the prayer offered by a person alone).
قَالَ شُعَيْبٌ وَحَدَّثَنِي نَافِعٌ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، قَالَ تَفْضُلُهَا بِسَبْعٍ وَعِشْرِينَ دَرَجَةً‏.‏
Reference : Sahih al-Bukhari 634
In-book reference : Book 10, Hadith 634
USC-MSA web (English) reference : Vol. 1, Book 1, Hadith 634
  (deprecated numbering scheme)