Musnad Ahmad 803:4

Abdullah narrated to us, Nuḥ ibn Ḥabīb narrated to us, Ḥafṣ ibn Ghiyāth ibn Ṭalq ibn Muʿāwiyah narrated to us, from ʿĀṣim al-Aḥwal, from Thaʿlabah ibn ʿĀṣim, from Anas ibn Mālik, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Wondrous is the affair of the believer; Allah does not decree anything for him except that it is good for him."