Salaah time expiring while one is performing Salaah
Q: It read if one one makes a niyyah ''to pray the fard of the current time'' and the time ends during the performance of salaah, and one does not know this then the salaah is not sahih. But when one knows the time ended during performance then the salaah is sahih. True? But if one had make niyyah ''to pray the fard of Dhuhr of today'' then salaah is sahih if during performance another prayer time enters. True?