Sheikh Bilal Homaysi starts the Chapter of Tayammum (Dry Purification) in the famous text Matan Abu Shuja, where if one was unable to access water, they would use pure dusty soil.
Sheikh Bilal addresses the integrals and conditions for one to use pure dusty soil to do dry purification in detail.
YouTube - https://youtu.be/rM4oG5DN_Ho
