The principle in Sharia is full commitment, but with ease and ease for one who has an obstacle that prevents him from performing the duties as it was revealed, as it sets a rule by which the payment of hardship is achieved with the performance of the duty.
Prayer is one of the most important duties that necessitates purification, but the time for prayer may come when a person is in a disease that prevents him from accessing water or access to it, so the Shariah permitted him to perform tayammum with dirt instead of water, and that is conditional on two conditions:
Entering the time for prayer and lack of water or inability to use it.
Tayammum soil from the good level makes it easier for you to do tayammum with pure earth if these two conditions are met.