坐禪三昧經 2.83

2.83

有因緣生。云何生？種種眾生處處生出，有受陰得持得入得命，是名生。

Becoming conditions birth. What is birth? The birth and emergence of various sentient beings in various places, receiving aggregates, obtaining faculties, obtaining entry [into sense spheres], and obtaining life; this is called birth.