If in a permanent marriage contract the parties do not specify the dowry, the contract is valid. [If the dowry is not specified, then] in the event that the husband has sexual intercourse with his wife, he must pay her a dowry that women like her usually receive. As for temporary marriage, in the event that the parties do not specify the dowry – even if that be due to ignorance, negligence, or forgetfulness – the marriage contract is invalid.