Jami` at-Tirmidhi 2963
جامع الترمذي#2963SahihNarrated Ibn 'Umar:"They were bowing during Salat Al-Fajr
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 MaaroufHasan Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 47:15