Musannaf Ibn Abi Shayba 33:1372

Yazid ibn Harun narrated to us, he said: Faraj ibn Fudala narrated to us, from Asad ibn Wada'a, who said: When Shaddad ibn Aws would go to his bed, he would be like a grain of wheat on a frying pan. Then he would say: "O Allah, the Fire has prevented me from sleep," and then he would stand up for prayer.