yat karoṣi … tat kuruṣva mad-arpaṇam —
whatever you do, do that as an offering to Me.
Bhagavad-gītā 9.27
mad-artham api karmāṇi kurvan siddhim avāpsyasi —
work for My sake, and you will attain perfection.
Bhagavad-gītā 12.10
sva-karmaṇā tam abhyarcya siddhiṁ vindati —
worshipping Him through your own work, you reach perfection.
Bhagavad-gītā 18.46
patraṁ puṣpaṁ phalaṁ toyaṁ … bhaktyā … aśnāmi —
a leaf, a flower, fruit or water — offered with love, I accept.
Bhagavad-gītā 9.26
mat-karma-kṛn mat-paramo … sa mām eti —
one who works for Me, devoted to Me, comes to Me.
Bhagavad-gītā 11.55