Śatapatha Brāhmaṇa ("of a hundred paths") 5.1.4.10

5.1.4.10

sa yunakti | javo yaste vājinnihito guhā yaḥ śyene parītto acaracca vāta iti javo yaste bājinnapyanyatrāṣanihitastena na imaṃ yajñam prajāpatimujjayetyevaitadāha tena no vājinbalavānbalena vājajicca bhava samane ca pārayiṣṇurityannaṃ vai vājo 'nnajicca na edhyasmiṃśca no yajñe devasamana imaṃ yajñam prajāpatimujjayetyevaitadāha

He yokes it, with (Vâg. S. IX, 9), 'What speed hath been secretly laid into thee, O courser, and what (speed), bestowed on the eagle, went along in the wind;'--he thereby says, 'what speed of thine, O courser, is hidden away even elsewhere, therewith win this our sacrifice, Pragâpati!'--'with that strength be thou strong and wealth-winning for us, O courser, and victorious at the gathering!'--wealth means food: he thus means to say, 'And be thou a food-winner for us at this our sacrifice, at the gathering of the gods win thou this sacrifice, Pragâpati!'