Allah the Exalted says:

“Look at the kinds of comparisons they draw for you: they have gone astray and can find no path at all.” ⦗al-Isrāʾ 48⦘

That is, they have likened you to a liar, to one under sorcery, and to someone who merely repeats what others dictate to him—and the falsity of each of these accusations is plain to anyone who truly knows you. Hence His words: “so they have gone astray and can find no path at all.” ⦗al-Isrāʾ 48⦘

A person who is astray is an ignorant soul who has veered from the road; such a one is incapable of taking the path that leads to the desired goal. Their weakness and inability therefore became obvious, leaving them with nothing to say in debate.

Allah the Exalted further says:

“They say, ‘Why does he not bring us a sign from his Lord?’ Has there not already come to them a clear proof contained in the former scriptures?” ⦗Ṭāhā 133⦘

Indeed, he brought them the unmistakable substance of what is in the earlier scriptures—the Torah and the Gospel—while they knew perfectly well that he had never learned anything from the People of the Scripture. Consequently, when he informed them of matters of the unseen that no one could know except a prophet, or someone informed by a prophet, and they were certain he had not received that knowledge from any prophet, it became evident to them that he was himself a prophet. That certainty spread to the rest of the nations as well, for when he