Musnad Abu Ya'la al-Mawsili 152:55

Muhammad ibn Abi Bakr narrated to us, Muhammad ibn Dinar narrated to us, from Ibrahim al-Hajari, from Abu al-Ahwas, from Abdullah, who said: "There is no one more jealous than Allah. And out of His jealousy, He has forbidden immoralities, what is apparent of them and what is hidden."