Al-Mustawrid reported: The Prophet, peace and blessings be upon him, said, “Whoever eats so much as a morsel at the expense of a Muslim’s reputation, then Allah will feed him the likes of it in Hell. Whoever clothes himself with a garment at the expense of a Muslim’s reputation, then Allah will clothe him with the likes of it in Hell. Whoever stands in a position of repute and fame at the expense of a man, then Allah will make him stand in a position of repute and fame on the Day of Resurrection.”
Source: Sunan Abī Dāwūd 4881
Grade: Sahih li ghayrihi (authentic due to external evidence) according to Al-Albani
عَنِ الْمُسْتَوْرِدِ أَنَّ النَّبِيَّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ قَالَ مَنْ أَكَلَ بِرَجُلٍ مُسْلِمٍ أَكْلَةً فَإِنَّ اللَّهَ يُطْعِمُهُ مِثْلَهَا مِنْ جَهَنَّمَ وَمَنْ كُسِيَ ثَوْبًا بِرَجُلٍ مُسْلِمٍ فَإِنَّ اللَّهَ يَكْسُوهُ مِثْلَهُ مِنْ جَهَنَّمَ وَمَنْ قَامَ بِرَجُلٍ مَقَامَ سُمْعَةٍ وَرِيَاءٍ فَإِنَّ اللَّهَ يَقُومُ بِهِ مَقَامَ سُمْعَةٍ وَرِيَاءٍ يَوْمَ الْقِيَامَةِ
4881 سنن أبي داود كتاب الأدب باب في الغيبة
934 المحدث الألباني خلاصة حكم المحدث صحيح بمجموع طرقه في السلسلة الصحيحة