A more thorough explanation:

SALVUS PLEGIUS

Salvus plegius (pronounced sal-vus plee-jee-us) is a Latin term used in law. It means a safe pledge or a satisfactory pledge. It is also known as certus plegius.

One example of salvus plegius is when a person gives their car as collateral for a loan. If they are unable to pay back the loan, the lender can take possession of the car as a safe pledge to cover the debt.

Another example is when a landlord requires a security deposit from a tenant. The security deposit serves as a satisfactory pledge that the tenant will take care of the property and pay their rent on time. If the tenant fails to do so, the landlord can use the security deposit to cover any damages or unpaid rent.

These examples illustrate how salvus plegius is used to ensure that a debt or obligation is fulfilled. It provides a sense of security for the lender or landlord, knowing that they have a safe or satisfactory pledge to fall back on if the borrower or tenant fails to meet their obligations.