Read the following scenario and answer the question that follows:

Jane Mothibe agreed with Brilliant Car Repairs to repair her motor vehicle. In terms of the contract, Brilliant Car Repairs would provide the parts and the labour for which Jane would pay them R 10 000. Brilliant Car Repairs did not perform in terms of their contract and Jane decided to take them to court.

Which further subdivision of the law of obligations is applicable to the agreement between Jane Mothibe and Brilliant Car Repairs in this scenario?