ahaṁ kratur ahaṁ yajñaḥ svadhāham aham auṣhadham
mantro ’ham aham evājyam aham agnir ahaṁ hutam||16|| 

Meaning : I am the Vedic ritual (kratu), I am the sacrifice (yajña), I am the offering to the ancestors (svadhā), the healing herb (auṣhadham), the sacred chant (mantra), the clarified butter (ājya), the fire (agni), and the act of offering itself (huta).