Translation of the verse 21 from Surah An-Nisa’ : Number of verses 176 - - page 81 - Part 4.
And how could you take it (back) while you have gone in unto each other, and they have taken from you a firm and strong covenant?
And how could you take it while you have gone in unto each other and they have taken from you a solemn covenant?
(4:21) How can you take it away after each one has enjoyed the other, and they have taken a firm covenant from you? *31
*31). The 'firm covenant' in this verse refers to marriage. For marriage is a firm covenant of fidelity. It is only because a woman has faith in the firmness of this covenant that she entrusts herself to a man. If a man decides of his own will to break it, he has no right to withdraw the amount he offered his wife by way of bridal-due at the time of entering into that covenant. (See Towards Understanding the Qur'an, vol. I, Surah 2, n. 251.)