Musannaf Ibn Abi Shayba 13:718

Abu Bakr narrated to us, he said: Yahya bin Abd al-Malik bin Abi Ghaniyah narrated to us, from his father, from al-Hakam, he said: It was disliked for a man to eat from the house of a man while he has a debt owed to him by him, unless he counts it against his debt.