Zurara b. Aufa told that God's messenger asked Gabriel, "Have you seen your Lord?" Gabriel trembled and replied, "Between Him and me, Muhammad, there are seventy veils of light, and if I approached
one of them I would be burned."
Thus, it is given in al-Masabih. Abu Nu'aim transmitted it in al-Hilya on the authority of Anas, but did not mention that Gabriel trembled.