When does the lessor acquire ownership of rent money from a lease agreement?

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The lessor acquires full ownership of the rent money immediately upon the conclusion of the lease contract. This is evidenced by the lessor's right to dispose of the rent via various transactions. If the leased property was a female slave (*jariya*), the lessor even possesses the right of sexual intercourse (*wat'u*). The possibility of nullification of the contract, which allows for the return of the consideration, does not prevent the obligation of Zakat from arising, similar to the dowry (*sadaq*) before consummation.