Question Can families exchange Eid greeting cards? Answer In general, card exchange is a non-Islamic practice, and has no justification from the Sunnah. Thus it should be avoided, except in cases where one has to write a letter anyway, and the card seems to serve the purpose conveniently. Obviously, the cards should not contain prohibited texts or pictures, such as the non-Islamic greeting: "Kullu `aamin wa-antum bi-khayr (May you be well each year)".