Jami` at-Tirmidhi 2964
جامع الترمذي#2964SahihNarrated Ibn 'Abbas:"When the Prophet (ﷺ) began facing the Ka'bah they said: 'O Messenger of Allah! How about our brothers who died while they were praying toward Bait Al-Maqdis?' So Allah Most High revealed: Allah would not allow your faith to be wasted. (2:)
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 ZaiHasan
In-book reference: 47:16