Bhagavad Gita 18.24 Chapter 18, Verse 24

यत्तु कामेप्सुना कर्म साहङ्कारेण वा पुनः ।
क्रियते बहुलायासं तद्राजसमुदाहृतम् ॥१८.२४॥

yattu kāmepsunā karma sāhaṅkāreṇa vā punaḥ
kriyate bahulāyāsaṃ tadrājasamudāhṛtam

Meaning

Action done with great strain by one who seeks to fulfil desires, or with ego, is declared rajasic.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 18.24 (Chapter 18, Liberation through Renunciation (Moksha Sannyasa Yoga), Verse 24)