Ibn Tumart affirmed in more than one place that "judgment in Sharia is not established by conjecture" and that "nothing is established except by knowledge, and the meanings are inferred by guesswork without investigation or attention to what is certain." He presented, to invalidate the principle of conjecture, the principles upon which the legal judgment is based, which are a set of textual and rational evidence directed at absolute conjecture, regardless of the form in which it is realized. As for the textual evidence, it revolves around "what Allah Almighty has informed in His Book about disbelieving peoples who opposed the truth and persisted in caprice and misguidance by following conjecture." This information includes the following verses: "They follow nothing but conjecture, and conjecture avails nothing against the truth." (Al-Najm / 28). "They follow nothing but conjecture, and conjecture avails nothing against the truth." (Al-Najm / 28). "And if you obey most of those on earth, they will mislead you from the path of Allah. They follow nothing but conjecture, and they are only guessing." (Al-An'am / 116). "And most of them follow nothing but conjecture. Indeed, conjecture avails nothing against the truth. Indeed, Allah is knowing of what they do." (Yunus / 36). "We only suspect, and we are not certain." (Al-Jathiyah / 32). It should not be overlooked that the conjecture intended in these verses is directed at conjecture in... The Mahdi often uses "knowledge" in the sense of certain origin, contrasting it with conjecture. "The most sought-after thing: Ibn Tumart." "The most sought-after thing: Ibn Tumart."