The Prophet said: “No woman should ask for the divorce of her sister (in religion) in order to spill what is in her container.”
the Prophet (ﷺ) forbade the deal involving earnest money. (Hasan)Abu ‘Abdullah said: Earnest money refers to when a man buys an animal for one hundred Dinar, then he gives the seller two Dinar in advance and says: “If I do not buy the animal, then the two Dinar are yours.” And it was said that it refers, and Allah knows best, to when a man buys something, and gives the seller a Dirham or less or more, and says: “If I take it (all well and good), and if I do not, then the Dirham is yours.”