अशास्त्रविहितं घोरं तप्यन्ते ये तपो जनाः ।दम्भाहङ्कारसंयुक्ताः कामरागबलान्विताः ॥
aśāstravihitaṃ ghoraṃ tapyante ye tapo janāḥ |dambhāhaṅkārasaṃyuktāḥ kāmarāgabalānvitāḥ ||
Those people who practice harsh austerities not prescribed by the scriptures, driven by pretension and ego, and armed with desire and passion…
Explanation
Krishna is continuing his description of how people's faith differs according to the three qualities (gunas) of nature. Here he describes those who take up severe austerity (tapas) that the scriptures do not sanction, motivated by show (dambha), ego (ahaṅkāra), desire (kāma) and attachment (rāga). The sentence continues into the next verse, where he says what such people are really doing.