What is the ruling on the money a sister took from her brother without his knowledge, given that her brother had acquired this money from his work through illicit means, and what is the ruling on the shop she established with this money, and is it permissible for her to leave the shop to her brother as compensation for the money?

He who stole stolen money that belongs neither to him nor to the thief must return it to its original owner if possible. Otherwise, he should dispose of it by spending it on charitable causes, along with repentance. If the stolen money belongs to his brother, he must return it to him or seek his forgiveness. In both cases, he is only obligated to return the original stolen amount; any profits accrued are his. If the shop is worth the stolen amount, he should sell the shop and return the money if he possesses nothing else to repay the debt.