Is it true that there is a permissible form of Sufism? Some say: The science of spiritual conduct is found in the Book and the Sunnah?

Question:
Honorable Shaykh, may Allah grant you success, he says, may Allah preserve you: Is it true that there is a permissible form of Sufism? Some say that the science of spiritual conduct and reaching Allah is found in the Book and the Sunnah, but the Sufis added to it from themselves, and we are more deserving of it.

Answer:
The Book and the Sunnah are what is called the science of the Book and the Sunnah. As for Sufism, it began with asceticism. The principle of Sufism is strictness in asceticism and worship. That is its beginning. Then it developed through stages until it reached the point of atheism and the claim of the unity of existence. This is the result of those who opposed the Book and the Sunnah. Even if in its beginning it intended good and limited itself to the Book and the Sunnah, in them is sufficiency. Worship is to be in accordance with the Book and the Sunnah, and scrupulousness is to be in accordance with the Book and the Sunnah. Yes.