俱舍論記 8.143

8.143

「所引異熟至所應至處」者，答。中有昧劣唯天眼見，非肉眼觀，故不名生。生位分明，肉天眼見，故得生名。

"The place of rebirth [...] that is to be reached": reply. Intermediate existence is obscure and faint, seen only by the divine eye and not perceptible by the physical eye; therefore it is not called birth. The state of birth is distinct and clear, visible to both physical and divine eyes; therefore it receives the name "birth".