In this passage Hujwiri confronts the Sophists (سوفسطائیان), who assert that no true knowledge is attainable and that knowledge itself does not exist. He refutes them by turning the claim on itself: the assertion that 'no knowledge is valid' is either itself valid or not. If they hold it valid, they have already affirmed that knowledge exists; if they hold it invalid, then a claim they concede to be false cannot be defended or debated, and arguing it is unreasonable. He answers a related group who say that, since knowledge is impossible, abandoning knowledge is better than affirming it — noting that abandonment must itself rest either on knowledge or on ignorance, so their position collapses. The concept illustrates the classical self-refutation argument against radical skepticism and defends the possibility and reality of knowledge (علم) as a foundation for the Sufi path.