Musnad Abu Ya'la al-Mawsili 117:171

Al-Hasan ibn al-Sabbah narrated to us, Mu'ammal narrated to us, from Hammad, from Thabit, from Anas, who said: The Messenger of Allah (may Allah bless him and grant him peace) delivered a sermon to us, and he said in his sermon: "There is no faith for the one who has no trustworthiness, and there is no religion for the one who has no covenant."