Śatapatha Brāhmaṇa ("of a hundred paths") 4.6.8.17

4.6.8.17

atha yadahareṣāṃ krayo bhavati | tadahargārhapatyāṃ citimupadadhātyathetarebhya upavasathe dhiṣṇyānvaisarjinānāṃ kāle prācyaḥ patnya upasamāyanti prajahatyetamaparamagniṃ huta eva vaisarjine

He leads forward the king. That Âgnîdhrîya fire has just been taken up on the support, when they take one fire-brand each and disperse to their several dhishnya hearths. Thus is this done, and not (left) undone. The reason why they have different dhishnyas, is that there may be wider space for moving about; and why they have different purodâsas, is that more sacrificial food may be left over for completeness.