成唯識論演祕 2.499

2.499

西域立法，出逢童女表有吉祥。又如童女齒白脣薄，脚膝纖團，表此女人生子必善，異前相者生子必惡。

The convention of the Western Regions is that going out and encountering a maiden indicates good fortune. Furthermore, if a maiden has white teeth and thin lips, slender and rounded calves and knees, it indicates that this woman will definitely give birth to a good son; one who differs from the former marks will definitely give birth to an evil son.