4-80 Muhammad ibn al-Hassan - may God be pleased with him - narrated that Ahmad ibn Idris quoted Muhammad ibn Ahmad ibn Yahya ibn Imran al-Ash’ari, who linked it up through a chain of narrators to the Commander of the Faithful Imam Ali (MGB), “God’s Prophet (MGB) forbade greeting four people: a drunk person, a sculptor, one who throws dice, and one who gambles. I will add one case and forbid you to greet one who plays chess.”