Repentance For Theft
The key thing to understand is that if someone has knowingly committed theft then on the Day of Judgement his fate will lie in the hands of the victim or the victims. Whatever good deeds they choose to take away from him, or whatever bad deeds of their own they choose to give to him, that person will have to comply. On the same principle, if a person wants to sincerely repent in this world, he should ask the victims what will it take for them to forgive him.