"So whoever takes the Hukm to other than the legislation of Allaah from all of the institutions and the man-made laws, then has taken the implicators of these laws and the ones who rule with them as partners with Allaah in his legislation. He, ta'ala said: 'Or do they have partners who have legislated for them what Allaah has not allowed? ' And He said: 'And if you obeyed them, then you are Mushrikeen. '
– "Al-Irshaad ila'Saheeh Al-' Atiqaad ", Vol. 1/ 72

And then again, after narrating what Al-Haafidh Ibn Katheer wrote concerning the Tartar's and "Al-Yasiq", he said, "And the likes of the law that he mentioned from the Tartars, and judged upon with Kufr, those who put in the place of the Islaamic Sharee'ah, are the fabricated laws, which have – in our time – been established as sources of laws in many countries and the Islaamic Sharee'ah has been disregarded in favor of them except in what they call 'personal matters'."
– "Al-Irshaad ila'Saheeh Al-' Atiqaad ", Vol. 1/ 74