The Messenger of Allah ﷺ said, "The congregational prayer surpasses the prayer of one of you performed alone by twenty-five degrees."
حدثنا أبو مروان محمد بن عثمان العثماني حدثنا إبراهيم بن سعد عن ابن شهاب عن سعيد بن المسيب
أن رسول الله ﷺ قال فضل الجماعة على صلاة أحدكم وحده خمس وعشرون جزءا
Bukhari narrated it in the Book of Tafsir, chapter "His statement, 'Indeed, the recitation of Fajr is witnessed'," hadith 4717, and elsewhere, hadith 649, and others, through routes from Zuhri, and Muslim narrated it in the Book of Mosques, chapter on the merit of congregational prayer, with slight differences.