Is a temporary marriage still valid if the husband did not actually fulfill the condition of giving the wife her dowry due to her indifference towards receiving it?
Bismihi ta'ala
If the required conditions were met at the time of the reciting of the contract, then it would be valid, and it is permissible for the female to wave her right to receive the agreed upon mahr. She is able to forfeit it after the contract, if she wants to.
And Allah knows best