Sunan an-Nasa'i 1910
سنن النسائي#1910SahihIt was narrated from Abu Hurairah, who attributed it to the Prophet:"Hasten with the Janazah, for if it was righteous then your are taking it toward something good, and if it was otherwise, then it is an evil of which you are relieving yourselves
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: 21:93