Rules of waters.
50. Mixed water whose meaning has been explained above does not make any Najis thing Pak, and its use is not allowed for Ghusl or Wudhu.
51. Mixed water, however large its quantity may be, becomes Najis when even a small particle of Nejasat falls in it. But if it falls on a Najis thing from above, with some force, the part which touches the Nejasat will become Najis, and the part which does not touch it, will remain Pak. For example, if rose water is sprinkled on a Najis hand from a sprinkler, the part which reaches the hand will be Najis and the part which does not reach the hand, will remain Pak. Also, if water is pushed from bottom to top like spring, if the upper part is in contact with Nejasat, the lower part will not be Najis.
52. When Najis mixed water is mixed with Kurr or running water, in a manner that it can no longer be called mixed water, it becomes Pak.
53. Water which was originally pure and it is not known whether it has turned into mixed water, will be treated as pure, i.e. it will make Najis thing Park and it will also be in order to perform Wudhu and Ghusl with it. But if it was originally mixed water, and it is not known whether it has turned into pure water, it will be treated as mixed water, i.e. it will not make Najis object Pak, and it cannot be used for Wudhu or Ghusl.
54. Water about which it is not known whether it is pure or mixed, and it is also not known whether originally it was pure or mixed, will not make Najis things Pak; and it is also not permissible to perform Wudhu or Ghusl with it. Also, it becomes Najis when a Nejasat reaches it, even if it is equal to a Kurr or more.
55. When an essential Nejasat like blood and urine reaches water, and changes its smell, color or taste, it becomes Najis even if it is Kurr or running water. But, if the smell, color or taste of the water changes owing to a Nejasat which is outside it, for example, if a carcass, which is lying by the side of the water, causes a change in smell, the water will not be Najis.
56. If water which has become Najis due to essential Nejasat like blood or urine, which changed its smell, color or taste joins Kurr water or running water, or if rain water falls on it, or is blown over it by the winds, or rain water falls on it through the drain pipe while it is raining, the water will become Pak, if the change vanishes. However, as an obligatory precaution, rain water or Kurr water or running water should get mixed with it.
57. If a Najis object is washed in Kurr or running water, the water which falls from the object after it is taken out of water is Pak.
58. Water, which was originally Pak and is not known whether it has become Najis, will be deemed Pak; and water, which was originally Najis, and is not known whether it has become Pak, is Najis.
59. The leftover of a dog, a pig, and a Kafir is Najis and it is Haraam to consume it, and the leftover of the animals whose meat is Haraam is Pak and it Makrooh (unrecommended) to eat or drink the leftover of such animals.