Sahih Muslim
The Book of Mosques and Places of Prayer — Hadith #1370
Scholarly Consensus: Sahih How we grade
وَحَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ بْنِ قَعْنَبٍ، حَدَّثَنَا أَفْلَحُ، عَنْ أَبِي بَكْرِ بْنِ مُحَمَّدِ بْنِ عَمْرِو بْنِ حَزْمٍ، عَنْ سَلْمَانَ الأَغَرِّ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم
" صَلاَةُ الْجَمَاعَةِ تَعْدِلُ خَمْسًا وَعِشْرِينَ مِنْ صَلاَةِ الْفَذِّ " .
Prayer said in a congregation is equivalent to twenty-five (prayers) as compared with the prayer said by a single person.
Chain of Narration (Isnad)
Hadith Grading
Each grade below reflects one scholar's assessment of the chain of transmission. The grade describes the chain, not the Prophet's words. How we grade
Scholarly Consensus: Sahih