Śatapatha Brāhmaṇa ("of a hundred paths") 4.5.2.16

4.5.2.16

paśuśrapaṇa evainam marudbhyo juhuyāt | ahutādo vai devānām maruto viḍahutamivaitadyadaśṛto garbha āhavanīyādvā eṣa āhṛto bhavati paśuśrapaṇastathāha na bahirdhā yajñādbhavati na pratyakṣamivāhavanīye devānāṃ vai marutastadenam marutsveva pratiṣṭhāpayati

He may offer it to the Maruts on the cooking-fire of the animal sacrifice; for the Maruts, the clans (common people) of the gods, are not oblation-eaters (ahuta-ad), and the uncooked embryo, as it were, is no oblation (ahuta); and the animal cooking-fire is taken from the Âhavanîya: thus indeed it (the embryo) is not excluded from the sacrifice, and yet is not (offered) directly in the Âhavanîya (offering-fire). And the Maruts are of the gods: he thus establishes it with the Maruts.