Musannaf Ibn Abi Shayba 33:56

Affan narrated to us, he said: Ja'far ibn Sulayman narrated to us, he said: al-Ja'd Abu 'Uthman narrated to us, he said: It reached us that Dawud said: "My God, what is the reward of one whose eyes overflowed out of fear of You?" He said: "His reward is that I shall secure him on the Day of the Greatest Terror."