Agniveshyagrihyasutra 2.5.10.6

2.5.10.6

saṃparistīrya nirvapān kṛtvā devasya tvā savituḥ prasave 'śvinorbāhubhyāṃ pūṣṇo hastābhyāṃ varuṇāya juṣṭaṃ nirvapāmi iti trīn muṣṭīn yajuṣā tūṣṇīṃ caturtham \

Having strewn [darbha grass] around and made the portions of oblation-material, he measures out three fistfuls with the formula: "At the impulse of the divine Savitṛ, with the arms of the Aśvins, with the hands of Pūṣan, I measure you out agreeable to Varuṇa," and a fourth silently.