Bhagavad Gita · 17.12

अभिसन्धाय तु फलं दम्भार्थमपि चैव यत्।इज्यते भरतश्रेष्ठ तं यज्ञं विद्धि राजसम्॥

abhisandhāya tu phalaṁ dambhārtham api chaiva yat ijyate bharata-śhreṣhṭha taṁ yajñaṁ viddhi rājasam

But sacrifice that is performed for the sake of its results or for ostentation — know that to be in the mode of passion, O best of the Bharatas.

— Bhagavad Gita 17.12

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)