مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ٩ - PURE AND MIXED WATER

iii. RUNNING WATER

٢٩. Running water is that water which springs up from the earth and begins to flow (e.g. the water of a spring or a canal). Even if such water is less than a Kurrit does not become impure by contacting an impurity so long as it does not acquire the smell, color, or taste of that impurity.
٣٠. If an impurity reaches the running water that part of the water, whose smell, color, or taste changes on account of the impurity, is impure and that side whichis connected with a spring is pure although it may be less than a Kurr. As regards the water of the other side of the canal if it is equal to a Kurr or is connected with thewater of the side of the spring by means of the water which has not changed, it is pure, but otherwise it is impure.
٣١. The water of a spring which is not running but is such that if water is taken from it, it gushes once again is as good as running water i.e. if an impurityreaches it, it is pure so long as its smell, color or taste does not change because of the impurity.
٣٢. When water adjacent to the bank of a canal is stationary and is connected with running water it does not become impure if its smell, color or taste does notchange by meeting an impurity.
٣٣. When, for example, the water of a spring gushes m winter but ceases to gush in summer, it can be treated as running water only when it gushes.
٣٤. If the water of the basin of a bath-room (Hammam) is less than a Kurr but is connected with a store of water which when added to the water of the basin becomesequal to a Kurr it does not become impure by meeting an impurity if its smell, color or taste does not undergo a change.
٣٥. If the water of the pipes of bathrooms and buildings, which pours through taps and showers, becomes equal to a Kurr after the addition of the water of the tankwith which they are connected, it is treated to be Kurr water.