Musannaf Ibn Abi Shayba 33:467

Abu Usama narrated to us, from al-Jurayri, from Yazid, from his brother, from Mutarrif, who said: Imran ibn Husayn said to me: "I am narrating a hadith to you, perhaps Allah will benefit you with it after today. Know that the best of the servants in the sight of Allah are the 'Hammadun' (those who praise Allah much)."