The Compendium of Caraka 4.2.26

4.2.26

garbhasya catvāri caturvidhāni bhūtāni mātāpitṛsaṃbhavāni/
āhārajānyātmakṛtāni caiva sarvasya sarvāṇi bhavanti dehe//

The fourfold elements of the embryo originating from mother and father,
those born from nutrition, and those made by the self—all of them are present in the body of every [being].