Bhagavad Gita 2.47 Chapter 2, Verse 47

कर्मण्येवाधिकारस्ते मा फलेषु कदाचन ।
मा कर्मफलहेतुर्भूर्मा ते सङ्गोऽस्त्वकर्मणि ॥२.४७॥

karmaṇyevādhikāraste mā phaleṣu kadācana
mā karmaphalaheturbhūrmā te saṅgo'stvakarmaṇi

Meaning

You have a right only to your actions, never to their fruits. Do not let the fruits be your motive, and do not be attached to inaction either.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 2.47 (Chapter 2, The Yoga of Knowledge (Sankhya Yoga), Verse 47)