Reference: Sharh ‘Umdatil-Fiqh – Tape No.6, Question No.25
Question: Sometimes I cannot find any water [to do wudhoo with], nor sand [or soil to do tayammum with], so what should I do when I want to pray?
Response: You should pray as you are, even if it is without wudhoo or tayammum; [it is important that] you do not leave the prayer, as Allaah (Ta’aala) says:
{So fear Allaah as much as you are able}, soorah at-Taghaabun, aayah 16