A more thorough explanation:

Definition: Equity of exoneration refers to the right of a person who is secondarily liable on a debt to make the primarily liable party discharge the debt or reimburse any payment that the secondarily liable person has made. This right exists when parties are successively liable, unlike contribution, which exists when the parties are equally liable.

Example: A surety is a person who agrees to pay a debt if the primary debtor fails to do so. In this case, the surety has the right of exoneration, which means that they can call on the principal debtor to reimburse them after they have paid the debt. For instance, if a person takes out a loan and a friend acts as a surety, the friend can demand reimbursement from the borrower if they end up paying the loan.

Explanation: The example illustrates equity of exoneration because the surety has the right to demand reimbursement from the primary debtor after they have paid the debt. This right exists because the surety is secondarily liable, and it would be unfair for them to bear the burden of the debt when the primary debtor is responsible for it.

Another example of equity of exoneration is when a testator leaves a gift of property encumbered by a mortgage or lien. In this case, the doctrine of exoneration operates to satisfy the encumbrance from the general assets of the estate. This means that the estate will pay off the mortgage or lien, and the beneficiary will receive the property free and clear of any debt.

Explanation: This example illustrates equity of exoneration because the doctrine operates to remove the burden of the mortgage or lien from the beneficiary. The estate is responsible for paying off the debt, and the beneficiary receives the property without any encumbrances. This is an equitable outcome because it would be unfair for the beneficiary to bear the burden of the debt when they did not create it.