Hiranyakeshigrihyasutra 1.1.3.7

1.1.3.7

yadasya karmaṇītyarīricaṃ yadvā nyūnamihākaram \ agniṣṭatsviṣṭakṛdvidvānsarvaṃ sviṣṭaṃ suhutaṃ karotu me \ agnaye sviṣṭakṛte suhutahute sarvahuta āhutīnāṃ kāmānāṃ sa mardhayitre svāhā \ ityuttarārdhapūrvārdhesaṃsaktāmitarābhirāhutībhirjuhoti \7\

(With the verse), 'What I have done too much in this sacrifice, or what I have done here deficiently, all that may Agni Svishtakrit, he who knows it, make well sacrificed and well offered for me. To Agni Svishtakrit, the offerer of well-offered (sacrifices), the offerer of everything, to him who makes us succeed in our offerings and in our wishes, svâhâ!'—he offers (the Svishtakrit oblation) over the easterly part of the northerly part (of the fire), separated from the other oblations.