Riyad as-Saliheen 1064
Ibn 'Umar (May Allah be pleased with them) reported:
The Messenger of Allah ﷺ said, "Salat in congregation is twenty-seven times more meritorious than a Salat performed individually."
[Al-Bukhari and Muslim].
وعن ابن عمر رضي الله عنهما أن رسول الله ﷺ قال: "صلاة الجماعة أفضل من صلاة الفذ بسبع وعشرين درجة)). ((متفق عليه))
Classification
Sahih (Authentic)
References
Riyad as-Saliheen 1064
Riyad as-Saliheen Book of Virtues, Hadith 74