Musnad Ahmad 30:1472

Hassan ibn Musa narrated to us, Ibn Lahi'ah narrated to us, Abu al-Aswad narrated to us, from Abdullah ibn Rafi', from Abu Hurairah, that the Messenger of Allah, peace and blessings of Allah be upon him, said: "Faith and disbelief do not gather in the heart of a man, and truthfulness and lying do not gather together, and treachery and trustworthiness do not gather together."