وَإِنْ أَرَدتُّمُ ٱسْتِبْدَالَ زَوْجٍ مَّكَانَ زَوْجٍ وَءَاتَيْتُمْ إِحْدَىٰهُنَّ قِنطَارًا فَلَا تَأْخُذُوا۟ مِنْهُ شَيْـًٔا ۚ أَتَأْخُذُونَهُۥ بُهْتَـٰنًا وَإِثْمًا مُّبِينًا
Wa in arattumustib daala zawjim makaana zawjin wa aataitum ihdaahunna qintaaran falaa taakhuzoo minhu shai'aa; ataakhuzoonahoo buhtaannanw wa ismam mubeenaa
If you wish to exchange one wife for another, and you have given one of them a great sum, take nothing back from it. Would you take it through slander and manifest sin?