Answer:
(Fatwa: 300/300/M=1431)
It is wajib to return the stolen thing to the owner, if returning the stolen thing is difficult, its price should be paid. If the original owner is no more alive, it should be returned to his heirs. If there are no heirs or they cannot be traced, it should be given in charity on their behalf. Also, you should repent to Allah and ask His forgiveness for committing theft.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
