What is the refutation of the claim that the awliya (close friends of Allah) have knowledge of the unseen?

Question:
Some of the sects say that the awliya have special knowledge of the unseen that the messengers do not have, and they claim that.

Answer:
Some of the sects. Yes. They say that the awliya have special knowledge of the unseen that the messengers do not have. The unseen. And they claim that the story of al-Khidr with Moses is evidence for this view. They say this is proof of the awliya's knowledge of the reality of the matter, while the prophets knew the Shari'ah. Please advise us.
This is as we indicated in our statement: some of them claim that they are informed of things that the messengers were not informed of, and that they take from the source from which the messengers take. This is something the extremists among them say.
And they claim that because of this, they do not need the messengers, because the messengers came only for the common people, whereas they have reached a high level and become part of the select few, so they do not need.
As for al-Khidr (peace be upon him), there is disagreement over whether he was a prophet or a wali (close friend of Allah). The correct view is that he was a prophet and that Allah revealed to him just as He revealed to the prophets. The matters mentioned by Allah about him in Surat al-Kahf are evidence of his prophethood, because they are matters that no one can know except through revelation. Al-Khidr, the correct view is that he was a prophet and not merely one of the awliya.