How do i stop the receipts of the product to capture the cost of the item? I want the products in "0" cost when i receive them. 

We always receive FOC items from the supplier and this item is not in our Purchase Order. But we have the record of this FOC items as we purchase them previously and we still have the stocks of these items. When we receive FOC items, we create Receipts under inventory > operation. 

It will capture the cost price of the items in our inventory and use this cost to multiply the quantity of the FOC we receive. We want to receive FOC items at "0" cost. IF we want to set the cost for these FOC items, we will use landed cost to set the cost for them by ourselves.