Shatapatha Brahmana 9.4.1.11

9.4.1.11

bhujyuḥ suparṇa iti | yajño vai bhujyuryajño hi sarvāṇi bhūtāni bhunakti yajño gandharvastasya dakṣiṇā apsarasa iti yajño ha gandharvo dakṣiṇābhirapsarobhirmithunena sahoccakrāma stāvā nāmeti dakṣiṇā vai stāvā dakṣiṇābhirhi yajña stūyate 'tho yo vai kaśca dakṣiṇāṃ dadāti stūyata eva sa sa na idam brahma kṣatram pātviti tasyokto bandhuḥ

'The beneficent, well-winged,'--beneficent (bhugyu) indeed is the sacrifice, for the sacrifice benefits all beings,--'Yagña (the sacrifice) is the Gandharva: his Apsaras are the offering-gifts,'--for as a Gandharva the sacrifice, indeed, went forth, with the offering-gifts as the Apsaras, his mates;--'Praises (stâvâ) by name,'--the offering-gifts are indeed praises, for the sacrifice is praised for offering-gifts; and whosoever gives an offering-gift (to priests) is praised;--'may he protect this our priesthood and nobility!' the meaning of this has been explained.