What is obligatory for one who performed tayammum for janabah and then found water?

The questioner : Praise be to Allah, Lord of the worlds, and may Allah send prayers and blessings upon our Prophet Muhammad, his family, and all his Companions. Honorable Shaykh, the questioner says: I became in a state of janabah, so I performed tayammum and then prayed the Fajr prayer. Before the time for the Zuhr prayer, I found water. What should I do? Do I perform wudu' or do I perform ghusl?

The Shaykh : It is obligatory for one who is in a state of janabah and has no water to perform tayammum and pray the prayer within its time. If he finds water afterwards, it becomes obligatory for him to perform ghusl. This is because tayammum is a means of purification when water is absent, so if water is found, it is obligatory to use it. For this reason, there is a hadith from the Prophet (peace and blessings be upon him), reported by the people of the Sunan, . If he finds water, let him fear Allah and let it touch his skin. Shaykh al-Islam Ibn Taymiyyah (may Allah have mercy on him) transmitted the consensus of the scholars on this, meaning that if one performs tayammum due to the lack of water and then finds it, it is obligatory for him to use it. If someone asks, "Do you say that tayammum purifies or does it not purify?" We say there are two opinions among the scholars. Some said that tayammum purifies, and some said that tayammum is a permission but not a purifier, meaning that if a person becomes in a state of ritual impurity and has no water, then performs tayammum, the only benefit he derives from it is the permission to pray.
According to this opinion, if he performed tayammum for a voluntary prayer, he would not be able to pray an obligatory prayer with it. This is because the voluntary prayer is of a lower rank than the obligatory prayer, and the higher is not permitted by the lower. However, if he performed tayammum for an obligatory prayer, he may pray the voluntary prayer, because the lower is permitted by the permission of the higher. But the second opinion, that the purifying tayammum is the correct one, is indeed the definitive position. This is due to the indication of the Book and the Sunnah. As for the Book, read the verse of wudu'. Read it. No, my brother.

Another questioner : I was ill. Or did you touch the women?

The Shaykh : Yes, yes. Well done, may Allah bless you. Listen to the word of Allah: What is it? And Allah mentioned this after the use of water and the use of earth, so this indicates that earth is a purifier just as water is.
As for the Sunnah, the Prophet (peace and blessings be upon him) said because he had his mosque and his means of purification. So, is tayammum a permission or a purifier? It is a purifier. On this basis, if a person performs tayammum for the Fajr prayer and does not become in a state of ritual impurity until the time for the Zuhr prayer arrives, does he repeat the tayammum for the Zuhr prayer or not? He does not repeat it according to the stronger opinion. However, if we say it is merely a permission, it becomes obligatory for him to repeat the tayammum even if he has not become in a state of ritual impurity. The correct view is that it is not obligatory. Now, if he performed tayammum for janabah after the Fajr adhan, and prayed Fajr, and then came and became in a state of minor ritual impurity, and then the time for Zuhr arrived, does he perform tayammum or not?
Tayammum for what? For the minor ritual impurity. As for the janabah, it has been lifted and he has become pure from it. But he performs tayammum for the minor ritual impurity because he became in a state of ritual impurity in the late morning. Now, if a sick person performed tayammum for the Fajr prayer and did not become in a state of ritual impurity until he slept from the second night, is he required to perform tayammum for Zuhr, 'Asr, and Maghrib? No, according to the stronger opinion. Therefore, the stronger opinion is that tayammum is not invalidated by the passing of the time because it is a purifier. But if he finds water and he had performed tayammum due to the lack of water, it is obligatory for him to purify himself with it. Yes.