What the Dry Ablution May Be Performed With: Earth and What Lies on Its Surface
Must the dry ablution be with earth that carries dust, or is it valid with anything of the earth's kind, such as sand and stone?
The dry ablution is valid with anything pure of the earth's kind — earth, sand, stone, gypsum — whether it carries dust or not.
The dry ablution is valid with anything lying on the surface of the earth that is of its kind and unaltered by manufacture — earth, sand, gravel, stones — and dust is not required.
The dry ablution is valid only with pure unmixed earth carrying dust that clings to the hand; it is not valid with smooth stone, nor with sand that carries no dust.
It is a condition that the dry ablution be with pure earth carrying dust that clings to the hand — Sūrat al-Māʾidah, verse 6.