There is no secret knowledge in Islam that is only for the awliyaa’ (“saints”) - Islam Question & Answer
Praise be to Allah.
Al-Shanqeeti said:
Al-Qurtubi (may Allaah have mercy on him) said: Our Shaykh, Abu’l-‘Abbaas, said: some heretics who followed batiniyyah (esoteric teachings) wanted to follow a path that did not enjoin these shar’i rulings. They said: these general shar’i rulings are obligatory upon the Prophets and the masses only. As for the awliyaa’ and the elite, they do not need those texts. Rather what is required of them is what they receive in their hearts through intuition and the thoughts that dominate their minds. They said: this is because their hearts are free of anything that may cause distraction and of thoughts of anything other than Allaah. In this manner divine knowledge becomes manifest to them, and they discover the secrets of creation and learn the rulings concerning minor issues, thus they are no longer subjected to the holistic shar’i rulings. This is what happened in the case of al-Khidr who, by means of the knowledge that was made manifest to him was rendered independent of the knowledge that Moosa had. One of the things that they narrated was the words: “Consult your heart, no matter how many people give you fatwas and advice.”
Our shaykh (may Allaah be pleased with him) said: These are the words of heresy and kufr; the one who says them should be executed without being asked to repent, because he has denied that which is known from the sharee’ah. For Allaah has set up the system by His wisdom in such a way that His rulings can only be known through His Messengers who are ambassadors between Him and His creation. They are the only ones who convey His Message and His words from Him, explaining His laws and rulings, and He has chosen them for that purpose.
What that means is that whoever says that he has taken the ruling of Allaah from his heart or from what he received in his heart through intuition, and that he acts upon that and thus has no need of the Qur’aan or Sunnah, has claimed for himself the unique qualities of Prophethood, because this is like what the Prophet (peace and blessings of Allaah be upon him) said: “The Holy Spirit [i.e., Jibreel] told me in my heart…” (From Tafseer al-Qurtubi).