A more thorough explanation:

Term: Liberatio
Definition: Liberatio is a historical term that refers to a payment made for the delivery or use of something. It was commonly used in legal contexts to describe a payment made to obtain the release of a prisoner or the use of a property.
Examples:

• When the king's army captured the enemy soldiers, they demanded a liberatio in exchange for their release.
• The landlord required a liberatio from the tenant before allowing them to use the property for business purposes.

These examples illustrate how liberatio was used to describe a payment made for the delivery or use of something. In the first example, the liberatio was paid to obtain the release of prisoners. In the second example, the liberatio was paid to use a property for business purposes.