Jami` at-Tirmidhi 1026
جامع الترمذي#1026Da'ifIbn Abbas narrated:"The Prophet recited Fatihatil-Kitab for a funeral (prayer)." (Da'if Jiddan)
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
Zubair Ali ZaiDaif
In-book reference: 10:62