What is the ruling if the Mukatab defaults on his payments and the master rescinds the indenture contract?

Primary text

If the Mukatab defaults and the master invalidates the indenture, the Mukatab reverts to being a slave and returns to his master. However, the guarantee of safety (Aman) granted to the Mukatab remains valid because it is related to his master's property (the Mukatab himself under contract). Since the master contracted the Aman for himself and his property, when the Aman is voided concerning his person (upon reversion to slavery), it is not voided concerning his property.