Gobhilagrihyasutra 1.8.27

1.8.27

tata eva barhiṣaḥ kuśamuṣṭim ādāyā ''jye vā haviṣi vā trir avadadhyād: agrāṇi madhyāni mūlānī 'ty aktaṃ rihāṇā vyantu vaya iti.

From that same Barhis he should take a handful of Kura grass, and should dip it thrice into the Âgya or into the Havis, the points, the middle, and the roots, with (the words), 'May the birds come, licking what has been anointed.'