[And those who do not know said], namely the polytheists of the Arabs, [Why]—meaning why—[does Allah not speak to us or a sign come to us? Those before them said the like of what they said], meaning the statement of the people of Moses to Moses, peace be upon him, [Show us Allah outright], and what they asked for in terms of signs. [Their hearts have become similar] in disbelief, similar to His saying: [They imitate the saying of those who disbelieved before]. [We have clearly shown the signs to a people who are certain], those who believe.
Muhammad said: Meaning the signs that he brought, may Allah's prayers be upon him, such as the splitting of the moon, and other than that of his signs.