Bhagavad Gita · Chapter 9: The Royal Knowledge and Royal Secret
Bhagavad Gita 9.27
यत्करोषि यदश्नासि यज्जुहोषि ददासि यत् ।
यत्तपस्यसि कौन्तेय तत्कुरुष्व मदर्पणम् ॥
yatkaroṣi yadaśnāsi yajjuhoṣi dadāsi yat | yattapasyasi kaunteya tatkuruṣva madarpaṇam ||
Whatever you do, whatever you eat, whatever you offer in sacrifice, whatever you give, and whatever austerity you practise, Arjuna, do it as an offering to me.
Modern context
The leaf and flower of the last verse now become the whole of life. Whatever you do, eat, offer, give or endure: make it an offering. Nothing is left out, not even eating. This removes the line between religious life and ordinary life. Work, meals, generosity and hardship all become ways of turning toward the divine. The practice is simple to state and lifelong to live.