Leviticus 27:9-15

“ ‘Some animals may be used as sacrifices to the LORD. If someone promises to bring one of these to the LORD, it will become holy. That person must not try to put another animal in its place or exchange it, a good animal for a bad one, or a bad animal for a good one. If this happens, both animals will become holy. “ ‘Unclean animals cannot be offered as sacrifices to the LORD, and if someone brings one of them to the LORD, that animal must be brought to the priest. The priest will decide a price for the animal, according to whether it is good or bad; as the priest decides, that is the price for the animal. If the person wants to buy back the animal, an additional one-fifth must be added to the price. “ ‘If a person gives a house as holy to the LORD, the priest must decide its value, according to whether the house is good or bad; as the priest decides, that is the price for the house. But if the person who gives the house wants to buy it back, an additional one-fifth must be added to the price. Then the house will belong to that person again.