The Vinaya Piṭaka
Pages 3

These steps in the procedure of admission, beginning with Gotama's simple 'Ehi bhikkhu!', represent a substantial period of development maturing in an environment of growing monasticism, and they denote an increasing tendency towards regimentation, during which more and more rules for the fully ordained bhikkhu were being introduced and included in the Vinaya code. For the novice (sama1,lera) there were ten abstentions.z

(I) indulge in sexual intercourse, (2) take anything that is not given him, (3) deprive a human being of life, (4) boast of possessing super-normal powers.