Sunan an-Nasa'i 1039
سنن النسائي#1039SahihIt was narrated that Abu Humaid As-Sa'idi said:"When the Prophet (ﷺ) bowed he was balanced, he did not make his head higher or lower than his back, and he put his hands on his knees
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Sahih Sahih Bukhari
In-book reference: 12:11