Qur'an 4:21 · An-Nisaa

وَكَيْفَ تَأْخُذُونَهُۥ وَقَدْ أَفْضَىٰ بَعْضُكُمْ إِلَىٰ بَعْضٍۢ وَأَخَذْنَ مِنكُم مِّيثَٰقًا غَلِيظًۭا

(21) And how could you take it while you have gone in unto each other and they have taken from you a solemn covenant?