The scholars, may God be pleased with them, agreed that it is invalidated by everything that invalidates ablution and purification, and they differed in two matters. The same matter is if the one who is performing tayammum wants to perform an obligatory prayer with the tayammum with which he prayed another prayer, so who says that wanting to perform the second prayer invalidates it, and who says that it does not invalidate it, and with that I say, and it is better in my opinion that he performs tayammum and it is necessary because Our doctrine is that tayammum is not a substitute for ablution, but rather it is another purification specified by the law under a special condition and not as a substitute. We have said that the ruling follows the situation and the ruling is transmitted by the transfer of adverbs and nouns.