 This is the most common form of conditional classification.If the parties agree that the performance of obligations under the contract is not enforceable until a certain condition is fulfilled, that condition is a suspensive one.As Van den Heever J noted, however, in "Odendaalsrust Municipality v New Nigel Estate Gold Mining", ‘The contract (in the modern sense, now that all contracts are consensual) is binding immediately upon its conclusion; what may be suspended by a condition is the resultant obligation or its exigible content’.