Narrated Saeed ibn Zayd: The Prophet ﷺ said: The most prevalent kind of usury is going to lengths in talking unjustly against a Muslim's honour.
Hadith Referenceسنن ابي داود / كتاب الأدب / 4876
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح, مشكوة المصابيح (5045), عبد الله ھو ابن عبد الرحمن بن أبي حسين
Hadith Takhrij« تفرد بہ أبوداود، (تحفة الأشراف: 4468)، وقد أخرجہ: مسند احمد (1/190) (صحیح) »
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues: Just as usury (riba) is forbidden in commercial transactions, in the same way, dishonoring and disrespecting your Muslim brother is also forbidden.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 4876