Imaam ash-Shaafi'ee, rahimahullaah, said:
"It is not permissible for anyone to ever say about anything that it is lawful or prohibited, except upon knowledge. This knowledge is what is related in the Book, or the Sunnah, or a consensus (ijmaa'), or an analogy (qiyaas)."
http://www.islaam.net/main/display.p...15&category=13
__________________