An-Nisa' - 4:21

وَكَيْفَ تَأْخُذُونَهُ وَقَدْ أَفْضَى بَعْضُكُمْ إِلَى بَعْضٍ وَأَخَذْنَ مِنكُم مِّيثَاقًا غَلِيظًا
[4:21]
And how can you take it when one of you has already gone in to the other and they have made with you a firm covenant?
And how could ye take it when ye have gone in unto each other, and they have Taken from you a solemn covenant?
How can ye take it (back) after one of you hath gone in unto the other, and they have taken a strong pledge from you?