مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ٨ - PURE AND MIXED WATER

it is not unlikely that the word of one just man and even of a reliable person in this behalf should be sufficient.

ii. UNDER-KURR WATER

٢٥. Under-Kurr water means water which does not spring up from the earth and its quantity is also less than a Kurr.
٢٦. If under-Kurr water is poured on something which is impure it becomes impure, or if an impure thing contacts it, it becomes impure. However, if such water fallson an impure thing from above, only that part of it which contacts it will become impure, and the water above it will be pure (Tahir).
٢٧. Under-Kurr water which is thrown on something to remove the original impurity (Najasat) from it and gets separated from it is impure. However, the under-Kurrwater which is thrown on a thing to purify it after the original impurity has been separated from it will be pure after getting separated from it provided that the place ofimpurity is purified immediately after water is thrown on it. For example if the place of impurity is a thing which becomes pure after washing once and does not also containan original impurity its washed out water i.e. the water which gets separated from it at the time of washing is pure. However, if a thing must be washed twice, then on thebasis of obligatory precaution, its first washed out water should be considered impure, and the washed out water of its second washing is pure.
٢٨. The water with which the outlets of urine and stool are washed is pure subject to the following five conditions: (i) It does not have the smell, color or tasteof the impurity. (ii) An impurity has not reached it from outside. (iii) Any other impurity like blood has not come out with urine or stool. (iv) Particles of stool do notappear in the water. (v) More than usual impurity has not reached the sides of the outlet