Ashtangasamgraha 41.29

41.29

pūrvamadhyāparāhṇeṣu caranti brāhmaṇādayaḥ |

astaṃgate ravau śūdrāḥ daśanti brāhmaṇāḥ puraḥ |

saṃsthitā dakṣiṇe pārśve kṣatriyā vāmato viśaḥ ||

Brāhmaṇas and the others roam in the morning, midday, and afternoon [respectively]; / at sunset, the Śūdras [roam]. Brāhmaṇas bite from the front; / Kṣatriyas, staying on the right side; Vaiśyas, from the left;