Skandapurana 17.16.23

17.16.23

gāṃ spṛṣṭvā brāhmaṇaṃ natvā saṃpūjya gurudevatāḥ ..
tapasvinaṃ yatiṃ śāṃtaṃ śrotriyaṃ brahmacāriṇam .. 23 ..

having touched a cow, having bowed to a brahmin, having worshipped the guru and deities, / an ascetic, a restrained renouncer, a Veda-knowing scholar, a celibate student;