Sunan an-Nasa'i
Book 21: The Book of Funerals
كتاب الجنائز
272 hadith in this book
Chapter 51 The Prohibition Of Saying Anything But Good About The Deceased
باب النَّهْىِ عَنْ ذِكْرِ الْهَلْكَى، إِلاَّ بِخَيْرٍ
It was narrated that 'Aishah said: "Something bad was said in the presence of the Prophet (ﷺ) about a person who had died. He said: 'Do not say anything but good about your dead."'
أَخْبَرَنَا إِبْرَاهِيمُ بْنُ يَعْقُوبَ، قَالَ حَدَّثَنِي أَحْمَدُ بْنُ إِسْحَاقَ، قَالَ حَدَّثَنَا وُهَيْبٌ، قَالَ حَدَّثَنَا مَنْصُورُ بْنُ عَبْدِ الرَّحْمَنِ، عَنْ أُمِّهِ، عَنْ عَائِشَةَ، قَالَتْ ذُكِرَ عِنْدَ النَّبِيِّ صلى الله عليه وسلم هَالِكٌ بِسُوءٍ فَقَالَ " لاَ تَذْكُرُوا هَلْكَاكُمْ إِلاَّ بِخَيْرٍ " .
Hadith text, translations and grading are courtesy of Sunnah.com.