Anas bin Malik reported,

The Messenger of Allah ﷺ said, "Straighten your rows, for straightening the row is part of the completeness of the prayer."

Muslim 975

Sahih

حدثنا محمد بن المثنى وابن بشار قالا حدثنا محمد بن جعفر حدثنا شعبة قال سمعت قتادة يحدث

عن أنس بن مالك قال

قال رسول الله ﷺ سووا صفوفكم فإن تسوية الصف من تمام الصلاة

مسلم 975صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Prayer
Chapter
Straightening and establishing the rows, the virtue of the first row and then those following it, crowding at the first row and racing to it, giving precedence to people of virtue and bringing them closer to the imam
Numbering
Darussalam 975
Muslim 975