If one wakes up in a state of major ritual impurity and fears that the time for prayer will end if he performs the full ritual bath, is dry ablution with clean earth prescribed for him?

Question:
He says: Honorable Shaykh, may Allah grant you success, if a person wakes up for the dawn prayer and is in a state of major ritual impurity, and he fears that the time will end, is it obligatory for him to perform the full ritual bath even if the time ends?

Answer:
Yes, he must perform the full ritual bath even if the time ends, because the full ritual bath is a condition for the validity of the prayer, so the condition is not discarded.