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5. Well water → ← 3. Flowing water

4. Rainwater

Ruling 35.* If rain falls once on an impure object that does not contain an intrinsic impurity, the area that comes into contact with the rain becomes pure. However, if a person’s body or some clothing has become impure by urine, then based on obligatory precaution, rain must fall on it twice for it to become pure. As for the impure inside of a utensil, rain must fall on it three times for it to become pure based on obligatory precaution. With carpets, clothing, and similar things, wringing out the rainwater is not necessary. Of course, a few drops of rainfall does not suffice; rather, it must be such that it can be commonly said to be raining.

Ruling 36. If rain falls on an intrinsic impurity and the water splashes, in the event that none of the intrinsic impurity is included in the splashed water and the water does not acquire the smell, colour, or taste of the impurity, the water is pure. Therefore, if rain falls on blood and the water splashes, in the event that particles of blood are present in the water or it acquires the smell, colour, or taste of blood, it is impure.

Ruling 37. If there is an intrinsic impurity on the roof of a building, then as long as it keeps raining on the roof, any water that comes into contact with the impure object and then falls down from the roof or gutter is pure. However, after it stops raining, if the water that falls from the roof or gutter is known to have made contact with the impure object, the water is impure.

Ruling 38. Ground that is impure becomes pure if rain falls on it; and if rainwater begins to flow on the ground and while it is still raining it comes into contact with an impure area under a roof [on which rain cannot fall directly], it purifies that area as well.

Ruling 39. If impure soil is completely soaked by rainwater, it becomes pure on condition that it is not known whether the water has turned into mixed water by means of it coming into contact with the soil.

Ruling 40. Whenever rainwater collects in a place – even if its quantity is less than kurr – in the event that an impure object is washed in it while it is raining and the water does not acquire the smell, colour, or taste of the impurity, the impure object becomes pure.

Ruling 41. If rain falls on a carpet that is pure and which is spread on ground that is impure, and if while it is raining the water soaks through the carpet and comes into contact with the ground, the carpet does not become impure and the ground becomes pure.
5. Well water → ← 3. Flowing water
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