Sahih al-BukhariChapter 10Hadith 649
Full Sharh — Sahih al-Bukhari 649
قَالَ شُعَيْبٌ وَحَدَّثَنِي نَافِعٌ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، قَالَ تَفْضُلُهَا بِسَبْعٍ وَعِشْرِينَ دَرَجَةً.
English Translation
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)
Source
Sahih al-Bukhari(صحيح البخاري)
Call to Prayers (Adhaan)
Hadith Number
649