Jami` at-Tirmidhi 254
جامع الترمذي#254SahihAbu Hurairah narrated:"Allah's Messenger would say the Takhir while he was going down
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: 2:106