Śatapatha Brāhmaṇa ("of a hundred paths") 5.5.1.4

5.5.1.4

atha yadaindreṇaikādaśakapālena puroḍāśena pracarati | saumyena vā caruṇā yadevainaṃ dakṣiṇāṃ diśaṃ samārohayati yadṛtūnyatstomānyaccandāṃsi tasmādevainametena niṣkrīṇāti saṃsravam bārhaspatye carāvavanayati

And why he proceeds with the cake on eleven potsherds for Indra, or with the pap for Soma,--because he makes him ascend the southern region, the seasons, the hymns and metres, he now redeems him therefrom by this (oblation). The remains he pours on the Brihaspati pap.