ŚBM, 13, 6, 1, 8.0 tasyāgniṣṭomaḥ prathamam ahar bhavati athokthyo 'thātirātro 'thokthyo 'thāgniṣṭomaḥ sa vā eṣa ubhayatojyotir ubhayataukthyaḥ //