Rules regarding essential Najasats

136. To make the script and pages of holy Qur'an Najis, is undoubtedly Haraam, and if it becomes Najis, it should be made Pak immediately with water.

137. If the cover of the holy Qur'an becomes Najis, causing its desecration, the cover should be made Pak by washing it with water.

Essentially Najis things

84. The following eleven things are essentially Najis:

1. Urine
2. Faeces
3. Semen
4. Dead body
5. Blood
6. Dog
7. Pig
8. Kafir (Infidel)
9. Alcoholic liquors
10. Beer (Fuqah)

As per obligatory precaution sweat of an animal who persistently eats Najasat.