(96) باب تَسْوِيَةِ الصُّفُوفِ
Muhammad b. Muslim b. al-Sa'ib said:
one day I prayed by the side of Anas b. Malik. He said ; Do you know why this stick is placed here ? I said : No, by Allah. He said; The Messenger of Allah (ﷺ) used to put his hand upon it and say: Keep straight and straighten your rows. (RU)
Reference (RU): Sunan Abi Dawud 669 (RU)
In-book reference (RU): Book 2, Hadith 279 (RU)
English translation (RU): Book 2, Hadith 669 (RU)