三佛子
Từ Điển Thuật Ngữ Phật Học Hán Ngữ
All the living are Buddha-sons, but they are of three kinds—the commonalty are 外子 external sons; the followers of the two inferior Buddhist vehicles, 小and 中 乘, are 庶子 secondary sons (i.e. of concubines); the bodhisattvas, i.e. mahāyānists) are 子 true sons, or sons in the truth.