Musannaf Ibn Abi Shayba 16:299

Abu Bakr narrated to us, he said: Yahya ibn Yaman narrated to us, from Sa'id ibn 'Ubayd, from Ali ibn Rabi'ah, he said: Ali had two wives. He used to buy for this one every day half a dirham's worth of meat, and for this one half a dirham's worth.