2.15.4 Those are considered as najis (Dirtiness)

Najis is dirtiness according to Islamic law. If najis has been in contact with anything, it shall be najis too. There are two categories : naturally or originally najis such as dogs, pigs, carrion etc., which the cleansing method (Mutahhirat) is not enough, and non-naturally najis such as blood containers which are permitted to cleanse by the ritual according to Islamic law.

2.15.4.1 Naturally Najis

Those are naturally najis namely all components are najis by themselves such as dogs, pigs, carrion, liquor, beer and blood.

2.15.4.1.1 Carrion

The animal which dies naturally and is not slaughtered according to Islamic law to be prohibited to consume. Regarding bleeding carrion is considered to be najis but some part is considered to die prior that animal's death such as hair, nails, horns, hoofed, teeth and enzymes that cause of animals milk coagulant (Rennin), those are considered clean and lawful to utilize.

2.15.4.1.2 Alcohol Beverages

Grape wines are considered to be intoxicant and prohibited to drink.

2.15.4.1.3 Beer

Beverages are made of barley and prohibited to drink.

2.15.4.2 Non Naturally Najis

Those which are not naturally najis, when anything has been in contact with them, it shall be najis too.