What is the ruling on tayammum (dry ablution with clean earth) for a person suffering from quadriplegia because he is unable to perform wudu' (the ablution for prayer)?

Question:
This questioner says: A person is unable to perform wudu' because he is suffering from quadriplegia, and he performs tayammum when he wants to pray. If he performs tayammum, for example, for the Maghrib prayer, and then enters the sacred precinct such that he does not leave it until after the 'Isha' prayer, and he is still in a state of purity, meaning he is still in the state of purity from the first tayammum, is he required to perform tayammum for every prayer, or is the first tayammum sufficient for him if he remains in a state of purity?

Answer:
This is obligatory. He should have one of his children or a servant to help him. He should have a servant who helps him with wudu' and assists him in performing wudu' if he is able. If he is not able, and he has no one to help him, and he is not able to hire someone to serve him, and he is not able to perform wudu' by himself, he performs tayammum and prays. However, this is not permissible except after he is unable to find someone to assist him in achieving purity, either from his relatives or by paying a wage. And if he performs tayammum for a prayer and remains in a state of purity, the correct view is that he prays the second prayer with it. This is the correct view; because tayammum is a substitute for water and takes its place. As long as his wudu' has not been invalidated, his tayammum remains. Even if the time for the first prayer ends and the time for the second prayer begins, this is the correct view among the scholars' opinions.