Bhagavad Gita 17.18

सत्कारमानपूजार्थं तपो दम्भेन चैव यत्।क्रियते तदिह प्रोक्तं राजसं चलमध्रुवम्॥

satkāramānapūjārthaṃ tapo dambhena caiva yat |kriyate tadiha proktaṃ rājasaṃ calamadhruvam ||

The austerity that is practiced with the aim of gaining good reception, honor, and worship, and with hypocrisy, is said to be Rajasic, unstable, and transient.

Austerity coupled with hypocrisy, or performed for the sake of self-glorification, popularity, or vanity, comes from passion, and its result is always uncertain and temporary.

Our plain-language meaning of this verse is waiting for scholar review.