Bhagavad Gita Chapter 9, Verse 27

यत्करोषि यदश्नासि यज्जुहोषि ददासि यत् | यत्तपस्यसि कौन्तेय तत्कुरुष्व मदर्पणम् ||

yat karoṣi yad aśnāsi yaj juhoṣi dadāsi yat yat tapasyasi kaunteya tat kuruṣva mad-arpaṇam

Whatever you do, whatever you eat, whatever you offer as oblation to the sacred fire, whatever you bestow as a gift, and whatever austerities you perform, O Arjuna, do them as an offering to Me.

Krishna reveals the path of offering everything: 'Yat karoṣi yad aśnāsi yaj juhoṣi dadāsi yat'—whatever (yat) you do (karoṣi), whatever (yat) you eat (aśnāsi), whatever (yat) you offer as oblation (juhoṣi), whatever (yat) you give (dadāsi). 'Yat tapasyasi kaunteya tat kuruṣva mad-arpaṇam'—whatever (yat) austerities you perform (tapasyasi), O Arjuna (kaunteya), do (kuruṣva) that (tat) as an offering to Me (mad-arpaṇam). This is the path of offering: everything you do—actions, eating, offerings, gifts, austerities—offer them all to the Supreme. This transforms everything into worship. You don't need to change what you do—just offer it to the Supreme. This is the beauty of devotion: everything becomes worship when offered to the Supreme. This is the path of devotion: offering everything to the Supreme, not keeping anything for yourself.