1. The Muslim must beware of impurity and try to avoid it as much as he can. 2. If Najasah (impurity) gets onto a person’s clothes, he does not have to do Ghusl. 3. Removing the impurity may be done by washing it until the traces of the impurity have disappeared. 4. Being pure and free from Najasah is a condition of the prayer being valid. 5. A small amount of all types of impurities may be overlooked. 6. If a few drops of urine get on a person’s garment and he washes off whatever got on it, until he thinks that most likely the Najasah has disappeared.

1. Dry impurity cannot be transferred if it comes into contact with another dry surface. But if the impurity is wet, then it is most likely that it could be transferred, whether it comes into contact with something that is wet or that is dry. 2. Honey, cream and other semi-liquids are affected by impure substances if they come into contact and mix with them. 3. If the impurity is a small amount, such that it cannot be seen by the naked eye, such as small droplets of urine and the like, then some of the scholars say that it is overlooked. 4. If the feet on which there is impurity become sweaty, the impurity will inevitably be transferred to the socks, because wet impurity is transferred to other things, even if the place to which it is transferred is dry.

Items that are solid and smooth (impermeable) may be purified by wiping them. If the impure substance gets onto cushions and large furnishings, water should be poured on the impure spot, until the water overwhelms the impure substance that got onto it. There is no religious text which states the number of times impurity must be washed, except the impurity of a dog only, which must be washed seven times. If impurity falls into water, it does not become impure unless it is changed thereby, such as if its colour or smell is changed. If the impure garment is washed in a washing machine and the trace of impurity is removed from it, then it becomes pure thereby.

If the impurity gets onto a carpet that cannot be wrung out, then the way to purify it is by removing the substance of the impurity, and drying up whatever urine is on it, then pouring water over it and drying it up. If the impurity came from a dog, then it is essential to wash the carpet seven times with water and to make the first time with soap or any other agent that will remove it.

If a Muslim man or woman prays in a garment on which there is some impurity, regardless of the type of garment, and he did not remember that until after he had finished praying, then his prayer is valid according to the correct opinion.