Al-Baqara · 2:237

If you divorce wives before consummating the marriage but after fixing a bride-gift for them, then give them half of what you had previously fixed, unless they waive [their right], or unless the one who holds the marriage tie waives [his right]. Waiving [your right] is nearer to godliness, so do not forget to be generous towards one another: God sees what you do

Word-by-word analysis is only wired up for the demo verses (1:1 and 1:2) for now.