"And if you are astonished, then astonishing is their statement" (the verse). The interpretation of al-Hasan is: If you are astonished, O Muhammad, by their denial of you, then their denial of the Resurrection is more astonishing. And His statement: "Is it that when we are dust, will we indeed be in a new creation?" So their saying that is astonishing.

Surah Ar-Ra'd (6) to the verse (7).