1. Srila Prabhupada’s rules for initiated devotees, given in 1966

    All initiated devotees must attend morning and evening classes.
    Must not be addicted to any kind of intoxicants including coffee, tea and cigarettes.
    They are forbidden to have illicit sex-connections.
    Must be strictly vegetarian.
    Should not extensively mix with non-devotees.
    Should not eat foodstuff cooked by non-devotees.
    Should not waste time in idle talks nor
    Engage himself in frivolous sports.
    Should always chant and sing the Lord's Holy names.

    Hare Krishna Hare Krishna Krishna Krishna Hare Hare,
    Hare Rama Hare Rama Rama Rama Hare Hare.