What is the ruling on purifying a person’s foot that has been afflicted with slight or considerable impurity as a result of walking on impure patches, and is it purified merely by walking on one pure spot, or must one continue walking for it to be purified?

If clothes are placed in the washing machine first, and then water is poured over them, the expelled water is pure unless it has changed due to impurity. However, if water is poured in first, and then the clothes, and the water is less than two qullas (a specific volume), scholars differ on whether it becomes impure. Some say it becomes impure even if it doesn't change, while others say it remains pure unless it changes due to impurity. Both opinions are considered valid.

If a bathroom floor becomes impure, scholars differ on its purification. Some are of the view that it becomes pure by sun, wind, and dryness without needing to be washed with water, while the majority hold that it does not become pure except with water.

If you step on an impure floor with a wet foot, your foot becomes impure. And if you step on a carpet with your wet foot, it becomes impure. The difference of opinion regarding the purification of land by dryness applies to other impure places as well.

If an impure foot steps on several places, it makes every place it touches impure while wet. However, after drying, it does not make it impure. The fundamental principle regarding the purity of things is that they are pure unless their impurity is confirmed.