The Compendium of Caraka 4.4.14_1

4.4.14_1

eṣā prakṛtiḥ, vikṛtiḥ punarato 'avyathā/ santi khalvasmin garbhe kecinnityā bhāvāḥ, santi cānityāḥ kecit/

This is the normal course; abnormality, however, is contrary to this. Indeed, there are in this embryo certain eternal factors, and there are certain non-eternal factors.