Śatapatha Brāhmaṇa ("of a hundred paths") 11.2.1.5

11.2.1.5

tāḥ pañcadaśa sāmidhenyaḥ dvāvāghārau pañca prayājā iḍā trayo'nuyājāḥ sūktavākaśca śamyorvākaśca tāstrayodaśāhutayo'tha yadevādaḥ patnīsaṃyājeṣu sampragṛhṇāti samiṣṭayajuśca

This makes fifteen kindling-verses,--there are two libations of ghee (âghâra), five fore-offerings, the Idâ, three after-offerings, the Sûktavâka, and Samyorvâka --that makes thirteen oblations. And when there, at the Patnîsamyâgas, he takes up at the same time (the two spoons); and the Samishtayagus:--