´It 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."'
Hadith ReferenceSunan an-Nasa'i / The Book of Funerals / Hadith: 1938
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري