`Urbun sale

Q 7: Is it permissible for the seller to obtain a `Urbun (down payment) from the purchaser? If the purchaser withdraws, is it permissible for the seller to keep the `Urbun for themselves and not return it?

A: If the reality is exactly as what is mentioned in the question, it is permissible for the seller to keep the `Urbun for themselves and not to return it to the purchaser provided that both sides agreed on this. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.