Musannaf Ibn Abi Shayba 33:977

Zayd ibn al-Hubab narrated to us, he said: Ubayd Allah ibn Shumayt ibn Ajlan informed me, he said: My father informed me that he heard al-Hasan saying: "Indeed, the believer wakes up sorrowful and goes to sleep sorrowful, and he is satisfied with what satisfies the small goat."