Bhagavad Gita 9.27
यत्करोषि यदश्नासि यज्जुहोषि ददासि यत्। यत्तपस्यसि कौन्तेय तत्कुरुष्व मदर्पणम्।।9.27।।
yatkaroṣi yadaśnāsi yajjuhoṣi dadāsi yat| yattapasyasi kaunteya tatkuruṣva madarpaṇam||9.27||
yatkaroshi yadashnasi yajjuhoshi dadasi yat yattapasyasi kaunteya tatkurushva madarpanam9.27
Meaning
Whatever you do, whatever you eat, whatever you offer in sacrifice, whatever you give, whatever austerity you perform — do it as an offering to Krishna. This transforms all of life into worship.
हे कौन्तेय! तुम जो कुछ कर्म करते हो, जो कुछ खाते हो, जो कुछ हवन करते हो, जो कुछ दान देते हो और जो कुछ तप करते हो, वह सब तुम मुझे अर्पण करो।
This is verse 27 of 34 in Chapter 9 (Raja Vidya Raja Guhya Yoga) of the Bhagavad Gita.