When asked concerning what the Bedouins judge with according to the customs of their fathers and grandfathers. "Do we label them with Kufr after it is made clear to them (that this is not permissible and when they continue)?"

So he answered, "Whoever takes the judgement to other than the Book of Allaah and the Sunnah of His Messenger after it is made clear to him (that this is not permissible), then he is a Kaafir. He, ta'ala said: 'And whosoever does not judge by what Allâh has revealed, such are the Kâfirûn. ' (And He ta'ala also said:) 'Is it other than the Deen of Allaah that they seek? '(And He ta'ala also said:) 'Have you seen those (hyprocrites) who claim that they believe in that which has been sent down to you, and that which was sent down before you, and they wish to go for judgement (in their disputes) to the Tâghût (false judges, etc.) while they have been ordered to reject them. ' 'And the Ayaat with this meaning are many."
– "Dur'ur As-Saneeyah fi'Al-Ajweebah An-Najdeeyah", Vol. 8/ 231 Published by "Dar Al-Iftaa' bil'Saudeeyah" 1385 H