وَعَنْ عَبْدِ اَللَّهِ بْنِ مَسْعُودٍ رضى الله عنه عَنْ
اَلنَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «اَلرِّبَا ثَلَاثَةٌ وَسَبْعُونَ بَابًا أَيْسَرُهَا مِثْلُ أَنْ يَنْكِحَ اَلرَّجُلُ أُمَّهُ، وَإِنَّ أَرْبَى اَلرِّبَا عِرْضُ اَلرَّجُلِ اَلْمُسْلِمِ»
The Prophet (sallallahu alayhi wa sallam) said: “Usury has seventy-three categories, the least one in sin is as that of a man who marries (has sexual relations with) his mother, and the very essence of usury is the (violation of the) honor of a Muslim man.”.
Bulugh al-Maram 953, Book 7, Business Transactions, Hadith 64. 1 min read