Hiranyakeshigrihyasutra 2.5.15.2

2.5.15.2

agnimupasamādhāya dakṣiṇāprāgagrairdarbhaiḥ paristīrya \ imāṃ pitṛbhyo gāmupākaromi tāṃ me sametāḥ pitaro juṣantām \ medasvatīṃ ghṛtavatīṃ svadhāvatīṃ sā me pitṝnsāṃparāye dhinotu \ svadhā namaḥ \ ityupākaraṇīyāṃ hutvaikena barhiṣaikaśūlayā ca vapāśrapaṇyaudumbaryopākaroti \ pitṛbhyastvā juṣṭāmupākaromi \ iti \2\

Having put wood on the fire and strewn southward-pointed and eastward-pointed Darbha grass around it, he sacrifices the oblation for the touching of the animal (see below), with (the verse), 'This cow I touch for the Fathers; may my assembled fathers gladly accept it (which is offered) with fat and ghee, with the word svadhâ; may it satiate my fathers in the other world. Svadhâ! Adoration!' Then he touches (the cow) with one (blade of) sacrificial grass and with an unforked Vapâsrapanî of Udumbara wood, with (the formula), 'I touch thee agreeable to the Fathers.'