12-58 Muhammad ibn Ali Majiluyih - may God be pleased with him - narrated that his uncle Muhammad ibn Abil Qasim quoted Harun ibn Muslim, on the authority of Mus’adat ibn Sadaqah, on the authority of Ja’far ibn Muhammad As-Sadiq (MGB), on the authority of his father (MGB), “You should not greet the Jews; the Christians; the Magians ; the idol-worshippers; those sitting at a table on which wine is served; chess players; backgammon players; the effeminates ; poets who accuse chaste women of adultery; those busy praying since they cannot greet you back as greeting is recommendable while greeting back is obligatory; those who devour usury; those who are in the toilet; those who are in the bathroom; and those who are corrupt in the publics eyes.”