कर्मण्येवाधिकारस्ते मा फलेषु कदाचन। मा कर्मफलहेतुर्भूर्मा ते सङ्गोऽस्त्वकर्मणि
karmaṇy-evādhikāras te mā phaleṣhu kadāchana mā karma-phala-hetur bhūr mā te saṅgo ’stvakarmaṇi
But you have only the right to work, but none to the fruit of it. Let not the fruit of your action be your motive; nor be you enamored of inaction.
Translated by Shri Purohit Swami
Your right is only to work, but not to its results; do not let the results of action be your motive, nor let your attachment be to inaction.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
karmaṇi—in prescribed duties; eva—only; adhikāraḥ—right; te—your; mā—not; phaleṣhu—in the fruits; kadāchana—at any time; mā—never; karma-phala—results of the activities; hetuḥ—cause; bhūḥ—be; mā—not; te—your; saṅgaḥ—attachment; astu—must be; akarmaṇi—in inaction