Sunan an-Nasa'i 1971
سنن النسائي#1971SahihIt was narrated from Abu Hurairah:That the Prophet announced the death of An-Najashi to the people on the day that he died, then he took them out to the prayer place and put them in rows and offered the funeral prayer for him, saying the Takbir four times
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 21:154