ANSWER:

If he’s not able to find that person at all then he must give that amount to poor and needy Muslims. If the person appears later on, he must inform him of what he had done and if he still wants his money, you must give it to him and that charity would be yours.

I wanted to ask about if someone bought something from someone and promised to give him the money back later, but then he couldn’t find the person at all. Is it permissible if he gives the same amount of money in Charity?