Riyad as-Salihin, Book 18, Hadith 1526 (In-Book) ⓘ

Anas (May Allah be pleased with him) said: The Messenger of Allah said, "During the Mi'raj (the Night of Ascension), I saw a group of people who were scratching their chests and faces with their copper nails. I asked, 'Who are these people, O Jibril?' Jibril replied: 'These are the people who ate flesh of others (by backbiting) and trampled people's honour."'[Abu Dawud].

وعن أنس رضي الله عنه قال‏:‏ قال رسول الله صلى الله عليه وسلم‏:‏ “لما عُرج بي مررت بقوم لهم أظفار من نُحاس يخمشون وجوههم وصدورهم، فقلت‏:‏ من هؤلاء يا جبريل‏؟‏ قال‏:‏ هؤلاء الذين يأكلون لحوم الناس، ويقعون في أعراضهم‏!‏”‏.‏ ‏(‏‏(‏رواه أبو داود‏.‏‏)‏‏)‏