Full context:   In some schools of ancient Indic Buddhism, Buddhist devotees could choose to adhere to only a number of precepts, instead of the complete five. The schools that would survive in later periods, however, that is Theravāda and Mahāyāna Buddhism, were both ambiguous about this practice. Some early Mahāyāna texts allow it, but some do not; Theravāda texts do not discuss such selective practice at all.