Qiyas is a legal equality something that does not exist with the law of something that there is proposed dikarnakan almost simultaneously or because of the equality of law. Jumhur Muslim clerics agree that qiyas is hujjah syar'i and then become a source of law, for example:
Allah has forbidden Khamr (arak), for destroying reason, destroyed the body, spent the treasures, Then all the intoxicating beverage law is haram dikiyaskan from khamr (arak)
Rasulallah has obliged the livestock of camels, cattle and goats. Then all the animals of the same kind of animals mentioned above shall be obliged to contribute the buffalo must be dizakatkan dikiyak from the cow