Canon 11 & 99 issued by the Council of Trullo [Present-day Italy] [Provisional]: “Canon 11 Let no one in the priestly order nor any layman eat the unleavened bread of the Jews, nor have any familiar intercourse with them, nor summon them in illness, nor receive medicines from them, nor bathe with them; but if anyone shall take in hand to do so, if he is a cleric, let him be deposed, but if a layman let him be cut off. Canon 99-We have further learned that, in the regions of the Armenians, certain persons boil joints of meat within the sanctuary and offer portions to the priests, distributing it after the Jewish fashion. Wherefore, that we may keep the church undefiled, we decree that it is not lawful for any priest to seize the separate portions of flesh meat from those who offer them, but they are to be content with what he that offers pleases to give them; and further we decree that such offering be made outside the church. And if any one does not thus, let him be cut off.”
“Council in Trullo.” Henry Percival. Accessed online excerpt 8/24/2011