The Prophet ﷺ said, "Congregational prayer is superior to praying alone by twenty-five degrees."
حدثنا يحيى عن عبد الرحمن بن عمار قال أبي وكان ثقة ويقال له ابن عمار بن أبي زينب مديني قال سمعت القاسم بن محمد
عن النبي ﷺ فضلت الجماعة على صلاة الفذ خمسا وعشرين
Its isnad is sahih. Abdul-Rahman bin Ammar bin Abu Zaynab is trustworthy, as Ahmad said, and the critics agreed with him, and his hadith appears in some of the Sunan works. The hadith was narrated by Bukhari 2/131 no. 646, and Muslim 1/449 no. 949, and the hadith has come up many times before. See 10077, 10452, 10744.