Śatapatha Brāhmaṇa ("of a hundred paths") 3.6.1.10

3.6.1.10

te hocuḥ | hanta yaḥ sarvāsāmoṣadhīnāṃ rasastaṃ yaveṣu dadhāmeti sa yaḥsarvāsāmoṣadhīnāṃ rasa āsīttaṃ yaveṣvadadhustasmādyatrānyā oṣadhayo mlāyanti tadete modamānā vardhanta evaṃ hyeṣu rasamadadhustatho evaiṣa etaiḥ sarvāḥ sapatnānāmoṣadhīryute tasmādyavamatyaḥ prokṣaṇyo bhavanti

They said, 'Come, let us put into the barley whatever sap there is of all plants!' And, accordingly, whatever sap there was of all plants, that they put into the barley: therefore the latter thrives lustily where other plants wither, for in such wise did they put the sap into them. And in like manner does this one now by means of those (barley-grains) attract to himself all the plants of his enemies: this is why the sprinkling-water contains barley-corns.