Purchasing a Property which its Khums has not been Paid
Issue No. 1482- If a person purchases a property on which khums is due, his transaction will be void with respect to one fifth of it, unless a Mujtahid or his representative gives permission. In such a case, the khums of the price should be given to him, and if it has been given to the seller, the buyer should take it back and give it to the Mujtahid or his representative.