Revākhaṇḍa ascribed to the Vāyupurāṇa (RKV) 19.49

19.49

jajñe 'tha tasyeśvarayogamūrteḥ pradhyāyamānasya surendrasaṅghaḥ /
vedāśca yajñāśca tathaiva varṇās tathā hi sarvauṣadhayo rasāśca //

Then from that lord of yogic form, as he meditated, the host of the chiefs of gods was born,
as well as the Vedas and sacrifices, and likewise the social classes, and indeed all herbs and flavors.