Śatapatha Brāhmaṇa ("of a hundred paths") 14.2.2.47

14.2.2.47

sahasre pravṛñjyāt sarvam vai sahasraṃ sarvameṣa sarvavedase pravṛñjyātsarvam vai sarvavedasaṃ sarvameṣa viśvajiti sarvapṛṣthe pravṛñjyātsarvam vai viśvajitsarvapṛṣṭhaḥ sarvameṣa vājapeye rājasūye pravṛñjyātsarvaṃ hi tatsattre pravṛñjyātsarvam vai sattraṃ sarvameṣa etānyasya pravarjanānyato nānyatra

One may perform the Pravargya for a thousand (head of cattle), for a thousand means everything, and that (Pravargya) is everything. One may perform it for all (the Sacrificer's) property; for all one's property means everything, and this (Pravargya) is everything. One may perform it at a Visvagit with all the Prishthas; for the Visvagit (all-conquering day) with all the Prishthas means everything, and this (Pravargya) is everything One may perform it at the Vâgapeya (and) Râgasûya, for such (a ceremony) means everything. One may perform it at a sacrificial session, for the session means everything, and this (Pravargya) is everything. These are (the occasions for) his performances of the Pravargya, and (let him perform it) nowhere else but at these.