大乘義章 12.119

12.119

次就界趣分別其相。界謂三界。欲界得受，非上二界。趣謂五趣，依如《毘曇》，三天下人得受八戒，以覺知心捷疾力故，不通餘趣及欝單越。若依《成實》，人天鬼畜皆得受之，故彼論言「如天帝多受八戒，龍等亦受，不局在人（此四門竟）。」

Next, their characteristics are differentiated with respect to realm and destiny. 'Realm' refers to the three realms. They may be received in the desire realm, but not in the upper two realms. 'Destiny' refers to the five destinies. According to the Abhidharma, humans of the three continents can receive the eight precepts because of the swift sharpness of their discerning minds; they are not open to the other destinies or to Uttarakuru. If according to the Tattvasiddhi, humans, devas, pretas, and animals can all receive them; thus that treatise states: 'Just as the lord of the devas frequently receives the eight precepts, nāgas and others also receive them; they are not restricted to humans' (this concludes the fourth gate).