How to Make Dry Ablution (Tayammum)
It is permitted to perform the dry ablution (tayammum) with a valid excuse– such as being roughly one mile or so away from any water.
How to Perform Tayammum
 Intend to lift the state of ritual impurity,
 say the basmala,
 strike the earth [or anything of the top surface of the earth like a stone],
 wipe your face entirely,
 strike the earth [or its equivalent] a second time,
 wipe the right arm completely up to and including the elbow, and then the left arm likewise.
[`Ala’ al-Din `Abidin, al-Hadiyya al-`Ala’iyya; Shurunbulali, Ascent to Felicity]
And Allah alone gives success.
By: Shaykh Asif of Halal or Haram Team