Is it permissible to give away the debt as charity if it is not possible to return it to my colleagues after repenting from stealing?

The thief must repent to Allah, for theft is one of the major sins. Complete repentance involves returning the money to its owners or seeking their forgiveness. If it is impossible to return the money directly, it can be delivered through indirect means or via an intermediary. If the owners of the money cannot be identified or reached, then the money should be given as charity on their behalf and spent for the benefit of Muslims, or handed over to a just distributor, as Ibn Mas'ud (may Allah be pleased with him) and other Tabi'un did.