He should be of sound mind while making a contract.
With this knowledge South had to try to make his contract.
He has made a contract that his mother will not come to see him for at least two months.
When making a contract be sure that you are both talking about the same thing.
He made a contract with them that they would learn from him for at least 8 years.
South would have to play the ace and another heart, making his contract.
It is anything of value promised to another when making a contract.
But he was still, apparently, on track to make his contract.
South guessed right by playing low and made his contract.
South was left to discover that he could and should have made his contract.