大般涅槃經集解 46.70

46.70

案僧亮曰：生即名為生者，先定生名也。生生不自生者，必生可生法，不生不生法也。僧宗曰：未生之無，不同菟角，故云生即名為生也。寶亮曰：正以因緣和合便名為生，因緣不會便名不生。

Sengliang says: 'Birth is immediately named birth' first establishes the name of birth. 'Birth does not give birth to itself' means that it must give birth to a dharma that can be born, not to a dharma that cannot be born. Sengzong says: The non-existence prior to birth is not like a hare's horn; hence it says 'birth is immediately named birth.' Baoliang says: It is precisely because of the coming together of causes and conditions that it is named birth; when causes and conditions do not meet, it is named non-birth.