Translation of the verse 4 from Surah An-Nisa’ : Number of verses 176 - - page 77 - Part 4.
And give to the women (whom you marry) their Mahr (obligatory bridal money given by the husband to his wife at the time of marriage) with a good heart, but if they, of their own good pleasure, remit any part of it to you, take it, and enjoy it without fear of any harm (as Allah has made it lawful).
And give the women [upon marriage] their [bridal] gifts graciously. But if they give up willingly to you anything of it, then take it in satisfaction and ease.
(4:4) Give women their bridal-due in good cheer (considering it a duty); but if they willingly remit any part of it, consume it with good pleasure. *7
*7). In the opinion of 'Umar and Shurayh, if a woman gives up either the whole or a part of the bridal-due (mahr) in favour of her husband and later reclaims it from him then he is bound to pay it. The claim on the woman's part would be tantamount to her unwillingness to remit either the whole or a part of the bridal-due. For further details see the section entitled 'Mahr' in my book Huquq al-Zawjayn, 16th edition, Lahore, 1976, pp. 31-3 and 119-23.