In my view, a Sunni is someone who follows the transmitted teachings of the Messenger and acts upon them according to the jurists’ rulings; follows the established path; obeys what is commanded and refrains from what is forbidden; avoids doubtful matters and stops where uncertainty arises; and frees himself from any learning that contradicts transmitted teachings, however pleasing it may be to the ear or appealing to the heart. Your heart is not the standard by which revealed law is judged. Allah has no group more exalted than those who transmitted reports from Him without introducing innovations, relying on what they transmitted rather than on their own opinions. Steadfast adherence to transmitted reports is the station of the utterly truthful.

Al-Khidr said to the Envoy:

“Indeed, you will never be able to have patience with me.”

For someone who judges things good or bad by his own opinion cannot follow. The explicit text of the Quran has shown you that the judgments of approval and disapproval made by the reasoning of the Envoy to whom Allah spoke did not accord with the correct standard, until the justification for what he had disapproved of was explained to him.”

[Ibn Taymiyyah’s commentary]

I say:

Ibn Aqīl has much to say in this same vein, extolling revealed law and condemning those who oppose it, whether among those engaged in rational inquiry and speculative theology or those devoted to spiritual aspiration and worship.

As mentioned earlier, various groups of scholars and religious men have spoken about this, but those whose approach is dominated by rational inquiry and speculative theology,