(76) باب مَا يُؤْمَرُ بِهِ الْمَأْمُومُ مِنَ اتِّبَاعِ الإِمَامِ
Al-Bara b.'Azib said ; we used to pray along with the prophet (ﷺ); none of us bowed his back until he saw that the prophet (ﷺ) bowed (his back). (ID)
Reference (ID): Sunan Abi Dawud 621 (ID)
In-book reference (ID): Book 2, Hadith 231 (ID)
English translation (ID): Book 2, Hadith 621 (ID)