Labor without the worry of fruit. - Shri Krishna's Key Shloka on Karma Yoga

Murudeshwar, Arabian Sea, Karnataka, Gopuram, Konkan

This couplet from the second chapter of Bhagwat Gita is one of the most popular in explaining Shri Krishna's philosophy on Karma Yoga: 

कर्मण्येवाधिकारस्ते मा फलेषु कदाचन । 
मा कर्मफलहेतुर्भुर्मा ते संगोऽस्त्वकर्मणि ॥

Karmanyevadhikaraste Ma Phaleshu Kadachana
Ma Karma Phala Hetur Bhur Ma Te Sango Stvakarmani

Karmanya means In the work
Eva means Only
Adhikara means Right
Te means Your
Ma means No or not
Phaleshu means In the result or fruit (‘Phal ’ refers to fruit)
Kadachana means At any time or Ever

Ma means No or not
Karmaphala means fruit of the work or result of the work
Heteu means either reason or motive
Bhu means Be
Ma means No or not
Te means Your
Sang means either Attachment or Companion
Astu means Let there be
vakarmani means Be in Action

You have a right to perform your prescribed duty, but you are not entitled to the fruits of action. Never consider yourself to be the cause of the results of your activities, and never be attached to not doing your duty.  - Krishna in Bhagwad Gita (Chapter II, Verse 47)

"Pray as though everything depended on God. Work as though everything depended on you" St Augustine