Śatapatha Brāhmaṇa ("of a hundred paths") 9.4.1.7

9.4.1.7

ṛtāṣāḍṛtadhāmeti | satyasāṭ satyadhāmetyetadagnirgandharvastasyauṣadhayo 'psarasa ityagnirha gandharva oṣadhibhirapsarobhirmithunena sahoccakrāma mudo nāmetyoṣadhayo vai muda oṣadhibhirhīdaṃ sarvam modate sa na idam brahma kṣatram pātu tasmai svāhā vāṭ tābhyaḥ svāheti tasyokto bandhuḥ

[He offers, with, Vâg. S. XVIII, 38-43], 'The law-upholding, law-abiding,'--that is, the truth-upholding, truth-abiding,--'Agni is the Gandharva: his Apsaras are the plants,'--for as a Gandharva, Agni, indeed, went forth with the plants as the Asparas, his mates,--'Delights (mud) by name,'--the plants are indeed delights, for everything here delights in plants--'may he protect this our priesthood and nobility: to him Hail! Vât! To them (fem.) Hail!' The meaning of this has been explained