PB, 10, 9, 1.0 yad ṛcā prastauti tat prathamasyāhno rūpam svaravibhakter yat purastāt stobhaṃ tad dvitīyasya yad ubhayataḥ stobhaṃ tat tṛtīyasya yad anutunnaṃ tac caturthasya yad abhyārabdhaṃ tat pañcamasya yad ihakāreṇābhyastaṃ tat ṣaṣṭhasyāhno rūpam //