Bg 9.27

yat karosi yad asnasi
yaj juhosi dadasi yat
yat tapasyasi kaunteya
tat kurusva mad-arpanam

Word for word: 
yat — whatever; karosi — you do; yat — whatever; asnasi — you eat; yat — whatever; juhosi — you offer; dadasi — you give away; yat — whatever; yat — whatever; tapasyasi — austerities you perform; kaunteya — O son of Kunti; tat — that; kurusva — do; mat — unto Me; arpanam — as an offering.

Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Whatever you do, whatever you eat, whatever you offer or give away, and whatever austerities you perform – do that, O son of Kunti, as an offering to Me.

Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Thus, it is the duty of everyone to mold his life in such a way that he will not forget Krishna in any circumstance. Everyone has to work for maintenance of his body and soul together, and Krishna recommends herein that one should work for Him. Everyone has to eat something to live; therefore he should accept the remnants of foodstuffs offered to Krishna. Any civilized man has to perform some religious ritualistic ceremonies; therefore Krishna recommends, “Do it for Me,” and this is called arcana. Everyone has a tendency to give something in charity; Krishna says, “Give it to Me,” and this means that all surplus money accumulated should be utilized in furthering the Krishna consciousness movement. Nowadays people are very much inclined to the meditational process, which is not practical in this age, but if anyone practices meditating on Krishna twenty-four hours a day by chanting the Hare Krishna mantra round his beads, he is surely the greatest meditator and the greatest yogi, as substantiated by the Sixth Chapter of Bhagavad-gita.