成唯識論述記 1.330

1.330

述曰：此列差別：與身俱起，名曰「俱生」；後橫計生，名「分別起」。下別釋之。

The Commentary states: This lists their distinctions: arising together with the body is called 'innate' (sahaja); arising subsequently through arbitrary imputation is called 'intellectually constructed' (parikalpita). Below, they are separately explained.