Abu Dawud Book 5, Hadith Number 2124.

Narated By Abdullah ibn Amr ibn al-‘As : The Apostle of Allah (PBUH) said: A woman who marries on a dower or a reward or a promise before the solemnisation of marriage is entitled to it; and whatever is fixed for her after solemnisation of marriage belongs to whom it is given. A man is more entitled to receive a thing given as a gift on account of his daughter or sister (than other kinds of gifts).