Tayammum is invalidated if there is water and the ability to use it, and there is no doubt that everything that exceeds the obligatory prayer is voluntary, whether it is obligatory or not, because the obligatory prayer is undoubtedly more certain than it, and the time for the obligatory prayer is based on the established residence, so the voluntary prayer is delayed, as the addition to the thing is not fulfilled. Except after the occurrence of the thing, the increase indicates the existence of an auction over it that precedes its existence, which is the obligation, which is the basis for the obligation, and so it is in the matter itself, for the obligation is the project that the one who abandons it is sinful, and the voluntary act only occurs after it has been established, so for it to be additional, it is invalidated, for when it is additional and what is proven is a matter before it. This is added to it, so the name of the additional one is valid for it, and observance of t