Kaushitakagrihyasutra 1.6: atha ṣaṣṭhaḥ khaṇḍaḥ

The sacrificial procedure has been explained, as agreed, as the model for the rites that bring prosperity,

and for all clarified butter oblations, for branch-sacrifices of cattle, and for caru cooked sacrifices.

When deities are indicated whose mantras are not recorded in the sacred text, [he offers] simply with: "To such-and-such, svāhā!"

If cooked sacrifices occur at the same time, he should repeat only the principal offerings in order at the principal insertion place.

All these cooked sacrifices have no preliminary offerings, no final offerings, no Iḷā invocations, no nigada formulas, and no kindling verses.

On this point there are also these verses: / "The offered sacrifice is performed through the Agnihotra oblation; the unoffered sacrifice through the bali offering; / the cast-off sacrifice through the ancestral rite; the tasted sacrifice is that offered into a brāhmaṇa. / One should always offer the oblation without raising the knees and with the knees joined; / for the gods never accept an oblation offered outside [the knees]. / Having recited a formula addressed to Rudra, to the Rākṣasas, to the ancestors, to the Asuras, or for sorcery, / one should touch water and also touch oneself."