If he had a doubt about the occurrence of the hadath after...

If he had a doubt about the occurrence of the hadath after being sure of being in the state of tahaarah [e.g. wudhu], then he should assume being in the state of tahaarah, and his tawaaf is valid. If however, he doubted [being] in the state of tahaarah, after being sure about the occurrence of the hadath, then he must seek tahaarah and it is not valid for him to perform tawaaf without being in the state of tahaarah.

On the other hand, if he doubted being in the state of tahaarah, and this doubt arose after the completion of the tawaaf, he should…