Sunan an-Nasa'i 1936
سنن النسائي#1936SahihIt was narrated that 'Aishah said:"The Messenger of Allah said: 'Do not verbally abuse the dead, for they have reached the consequences of what they did
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 Bukhari
In-book reference: 21:119