In Q.5:7, Allah says, ‘if ye are ill or on a journey … and ye find no water, then perform …’
Answer Details
In Quranic verse 5:7, Allah instructs that if a person is sick or traveling and cannot find water, then they should perform a specific type of ritual purification called "at-tayammum." This involves using clean earth or dust to wipe over one's face and hands, and it serves as a substitute for the traditional ablution (wudu) or full body washing (ghusl) when water is not available. The concept of "qasr" is not mentioned in this verse and refers to the shortening of prayers during travel, rather than purification rituals.