النساۤء — An-Nisa' Ayat 20
وَاِنْ اَرَدْتُّمُ اسْتِبْدَالَ زَوْجٍ مَّكَانَ زَوْجٍۙ وَّاٰتَيْتُمْ اِحْدٰىهُنَّ قِنْطَارًا فَلَا تَأْخُذُوْا مِنْهُ شَيْـًٔا ۗ اَتَأْخُذُوْنَهٗ بُهْتَانًا وَّاِثْمًا مُّبِيْنًا
Wa in arattumustibdāla zaujim makāna zauj(in), wa ātaitum iḥdāhunna qinṭāran falā ta'khużū minhu syai'ā(n), ata'khużūnahū buhtānaw wa iṡmam mubīnā(n).
"But if you want to replace one wife with another and you have given one of them a great amount [in gifts], do not take [back] from it anything. Would you take it in injustice and manifest sin?"