When (some of) you divorce (their) women (for the first or the second time) and they approach the end of the prescribed period of waiting (- `Iddat) then do not prevent them from remarrying their (former) husbands when they have agreed between themselves to an equitable and decent contract. This is an exhortation for those among you who believe in Allâh and the Last Day. This is more blissful for you and purer. And Allâh knows while you do not know.