The ruling on the finder of a lost item detaining it to collect his fee from the owner of the lost item

Question : Now, is he allowed to detain it for its fee? The finder says to the owner, “I will not give it to you until you pay me the fee.”

Answer : The answer is yes. Because this fee is for the benefit of the item, he may detain it for its fee, just as the sold item is detained for its price according to the stronger opinion. And Allah knows best.