aśāstra-vihitaḿ ghoraḿ
tapyante ye tapo janāḥ
dambhāhańkāra-saḿyuktāḥ
kāma-rāga-balānvitāḥ
karṣayantaḥ śarīra-sthaḿ
bhūta-grāmam acetasaḥ
māḿ caivāntaḥ śarīra-sthaḿ
tān viddhy āsura-niścayān
Translation
Those who undergo severe austerities and penances not recommended in the scriptures, performing them out of pride and egoism, who are impelled by lust and attachment, who are foolish and who torture the material elements of the body as well as the Supersoul dwelling within, are to be known as demons.