Dakshasmriti 1.12

1.12

prātilomyena yo yāti na tasmāt pāpakṛttamaḥ
mekhalājinadaṇḍena brahmacārī tu lakṣyate

He who proceeds in reverse order—none is a worse sinner than he. / The chaste student is characterized by the girdle, antelope skin, and staff;