Musannaf Ibn Abi Shayba 33:1064

Affan narrated to us, he said: Abu al-Ashhab narrated to us, he said: I heard al-Hasan saying: O son of Adam, indeed you have a secret and indeed you have an outward appearance, and your secret is more possessive of you than your outward appearance. And indeed you have speech, and your action is more possessive of you than your speech.