184. The earth will make the sole of the feet and the sole of the shoes ÔÁhir if the following three conditions are fulfilled:
a. The earth is ÔÁhir;
b. It is also dry;
c. If the ayn al-najÁsah, like blood or urine, or a najis thing, like najis mud, is stuck to the sole of the feet or the shoes, it should get cleared by walking or rubbing the feet or shoes against the earth. Additionally, the ground should be composed of sand, stones, bricks or something similar. Hence, walking over a carpet, a straw mat, grass or anything similar will not render the najis sole ÔÁhir.
185. Making the najis sole of the feet or the shoes ÔÁhir by walking over a tar road or a wooden floor is problematic.185. Making the najis sole of the feet or the shoes ÔÁhir by walking over a tar road or a wooden floor is problematic.185. Making the najis sole of the feet or the shoes ÔÁhir by walking over a tar road or a wooden floor is problematic.
186. It is better to walk a distance of fifteen arm-lengths or more to make the sole of the feet or shoes ÔÁhir, although the najÁsah may get cleared by walking a shorter distance or rubbing it against the ground.
187. It is not necessary for the sole of the shoes or the feet to be wet. They will become ÔÁhir by walking on the earth even if they are dry.
188. After the sole of the shoes or the feet become ÔÁhir by walking on earth, the areas around the sole which usually become soiled as well, will also be ÔÁhir.
189. If the palms or knees of a person who crawls on his hands and knees, become najis, making them ÔÁhir by crawling on earth is problematic. The same applies to the tip of a cane, the sole of an artificial foot, the shoes of quadrupeds, and the wheels on a car, bicycle or any other vehicle.
190. There is no harm if smell, color or small particles—which are not visible to the naked eye—remain on the sole of the shoes or the feet after walking on the earth. The recommended precaution though, is that one should walk to an extent that these qualities disappear as well.
191. The inner parts of the shoes do not become ÔÁhir by walking. Additionally, making the bottom of the socks ÔÁhir by walking is problematic.