Shivapurana 7.2.37.18

Śivapurāṇa (complete text) 7.2.37.18

yogaśāstreṣvapi tathā purāṇeṣvapi keṣu ca |
ahiṃsā satyamasteyaṃ brahmacaryāparigrahaḥ |
yama ityucyate sadbhiḥ pañcāvayavayogataḥ ||