أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ صَلاَةُ الْجَمَاعَةِ أَفْضَلُ مِنْ صَلاَةِ أَحَدِكُمْ وَحْدَهُ خَمْسًا وَعِشْرِينَ جُزْءًا "
It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:
"Praying in congregation is twenty-five portions better than one of you praying alone."
Reference: Sunan an-Nasa'i 838
In-book : Book 10, Hadith 62
English translation : Vol. 1, Book 10, Hadith 839