27 And if it is an unclean beast, then the owner of it may give money to get it back, in agreement with the value fixed by you, by giving a fifth more; or if it is not taken back, let it be given for money in agreement with your valuing.

Matthew Henry's Commentary on Leviticus 27:27

Commentary on Leviticus 27:26-33

(Read Leviticus 27:26-33)

Things or persons devoted, are distinguished from things or persons that were only sanctified. Devoted things were most holy to the Lord, and could neither be taken back nor applied to other purposes. Whatever productions they had the benefit, God must be honoured with the tenth of, if it could be applied. Thus they acknowledge God to be the Owner of their land, the Giver of its fruits, and themselves to be his tenants, and dependants upon him. Thus they gave him thanks for the plenty they enjoyed, and besought his favour in the continuance of it. We are taught to honour the Lord with our substance.