Śatapatha Brāhmaṇa ("of a hundred paths") 5.1.2.18

5.1.2.18

uparyuparyevākṣamadhvaryuḥ | somagrahaṃ dhārayatyadho 'dho 'kṣaṃ neṣṭā surāgrahaṃ sampṛcau sthaḥ sam mā bhadreṇa pṛṅktamiti netpāpamiti bravāveti tau punarviharato vipṛcau stho vi mā pāpmanā pṛṅktamiti tadyatheṣīkām muñjādvivṛhedevamenaṃ sarvasmātpāpmano vivṛhatastasminna tāvaccanaino bhavati yāvattṛṇasyāgraṃ tau sādayataḥ

The Adhvaryu holds the Soma-cup just over the axle, and the Neshtri the Surâ-cup just below the axle, with (V. S. IX, 4), 'United ye are: unite me with happiness!' Thinking, 'Lest we should say "evil",' they withdraw them again, with, 'Disunited ye are: disunite me from evil!' Even as one might tear a single reed from a clump of reed-grass, so do they thereby tear him from out of all evil: there is not in him so much sin as the point of a grass-blade. They deposit the two (cups each time on the mounds).