Riyad as-Salihin 1564
'Aishah (May Allah be pleased with her) said:
The Messenger of Allah (ﷺ) said, "Do not abuse the dead, because they have attained that which they had forwarded (i.e., their deeds, good or bad)." [Al-Bukhari] .
وعن عائشة رضي الله عنها قالت‏:‏ قال رسول الله صلى الله عليه وسلم ‏:‏ ‏
"‏لا تسبوا الأموات فإنهم قد أفضوا إلى ما قدموا‏"‏‏.‏ ‏(‏‏(‏رواه البخاري‏)‏‏)‏‏.‏