Translation of the verse 20 from Surah An-Nisa’ : Number of verses 176 - - page 81 - Part 4.
But if you intend to replace a wife by another and you have given one of them a Cantar (of gold i.e. a great amount) as Mahr, take not the least bit of it back; would you take it wrongfully without a right and (with) a manifest sin?
But if you want to replace one wife with another and you have given one of them a great amount [in gifts], do not take [back] from it anything. Would you take it in injustice and manifest sin?
(4:20) And if you decide to dispense with a wife in order to take another, do not take away anything of what you might have given the first one, even if you had given her a heap of gold. Would you take it back by slandering her and committing a manifest wrong?