Śatapatha Brāhmaṇa ("of a hundred paths") 4.6.9.3

4.6.9.3

tatho eveme sattramāsate | ye sattramāsate śriyaṃ gacema yaśaḥ syāmānnādāḥ syāmeti tebhya etadannādyamabhijitamapacikramiṣati paśavo vā annam paśavo haivaibhyastadapacikramiṣanti yadvai na ime śrāntā na hiṃsyuḥ kathamiva svinnaḥ sakṣyanta iti

And in like manner do these Sattrins now sit through a sacrificial session, thinking, 'May we attain excellence, may we be glorious, may we be eaters of food!' That food, gained by them, wishes to go away from them,--and, food being cattle, it is the cattle that wish to go away from them, thinking, 'It is to be feared lest they, being exhausted, may hurt us: how, indeed, will they deal with us?'