If the area under the cast has healed, does he have to repeat it?

Question : Yes, likewise, if the area under the cast has healed, it is obligatory for him to renew his ritual purity.

Answer : Yes, if it is on the parts of the ablution, he renews the ablution. If it is on the parts of the full ritual bath, as if he bathed from major ritual impurity and wiped over it, he renews the washing of what is under it, but he does not renew the full bath, because in the school of jurisprudence, continuity is not a condition for the full bath. So he washes what is under it and that is sufficient, if the cast is removed. He renews his ritual purity, and the correct view, as we have just established, is that his ritual purity is not invalidated by the healing of what is under it or by its removal. He re-ties it immediately or whenever he wishes, because, according to the stronger view as mentioned, ritual purity is not a condition for placing the cast.