Jami` at-Tirmidhi 341
جامع الترمذي#341SahihIbn Umar said:"They were bowing during the Subh (Fajr) Prayer
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 2:193