The Book of Funerals
21/52. Chapter:
Prohibition Of Verbally Abusing The Dead
Sunan an-Nasai
أَخْبَرَنَا حُمَيْدُ بْنُ مَسْعَدَةَ، عَنْ بِشْرٍ، - وَهُوَ ابْنُ الْمُفَضَّلِ - عَنْ شُعْبَةَ، عَنْ سُلَيْمَانَ الأَعْمَشِ، عَنْ مُجَاهِدٍ، عَنْ عَائِشَةَ، قَالَتْ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تَسُبُّوا الأَمْوَاتَ فَإِنَّهُمْ قَدْ أَفْضَوْا إِلَى مَا قَدَّمُوا " .
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."'
Reference : Sunan an-Nasa'i 1936In-book reference : Book 21, Hadith 119English translation : Vol. 3, Book 21, Hadith 1938