Surah An-Nisa 4:21
وَكَيْفَ تَأْخُذُونَهُۥ وَقَدْ أَفْضَىٰ بَعْضُكُمْ إِلَىٰ بَعْضٍ وَأَخَذْنَ مِنكُم مِّيثَٰقًا غَلِيظًا ٢١
EnglishSahih International
And how could you take it while you have gone in unto each other and they have taken from you a solemn covenant?