Sīnā and others like him were among them. His father was one of the missionaries of the Egyptian Qarmatians. He said, “That is why I took up philosophy.”

Then he said, “There is a third category of revelation that falls between these two categories, and its classification is uncertain. Some who engage in rational inquiry assign it to the category whose apparent meaning must not be departed from through interpretation; others assign it to the category whose hidden meaning scholars must not construe according to its apparent sense, owing to the complexity and ambiguity of this category