671. If a person knew that he would not get water, and yet made his Wudhu void or spilled it after the time for prayers had set in, he committed a sin but his prayers with tayammum will be order. However, the recommended precaution is that he should offer the Qadha of the prayers.
672. If a person is unable to procure water on account of old age or weakness, or fear of a thief or a beast, or because he does not possess means to draw water from a well, he should perform tayammum. The same would apply if acquiring water is intolerably difficult. But in this last situation, if a person, inspite of the difficulty, did not perform tayammum, and did Wudhu, his Wudhu will be valid.
673. If a bucket, a rope and other similar implements are needed for pulling water out of a well, and the person concerned is obliged to purchase or hire them, he should do so even if he has to pay much more than the usual rate. Similarly, he has to buy the water even if it is sold at a higher price. However, if by doing so, his economic condition is harmed, then it is not obligatory to procure them.
674. If a person is obliged to take a loan for procuring water he should take a loan. However, if he knows or feels that it will not be possible for him to repay the loan it is not obligatory for him to take a loan.
675. If digging a well does not involve much hardship the person concerned should dig a well to get water.
676. If he is given water by another person without any obligation he should accept it.
677. If a person fears that if he uses water his life will be endangered, or he will suffer from some ailment or physical defect, or the illness from which he is already suffering will be prolonged, or become acute or some complications may arise in its treatment, he should perform tayammum. However, if he can avoid the harm by using warm water, he should prepare warm water and do Wudhu, or Ghusl when it is necessary.
678. It is not necessary to be absolutely certain that water is harmful to him. If he feels that there is a probability of harm, and if that probability is justified by popular opinion, giving cause for some fear, then he should do tayammum.