Bhagavad Gita Chapter 3 Sloka 22 (3.22)

ನ ಮೇ ಪಾರ್ಥಾಸ್ತಿ ಕರ್ತವ್ಯಂ ತ್ರಿಷು ಲೋಕೇಷು ಕಿಂಚನ ।
ನಾನವಾಪ್ತಮವಾಪ್ತವ್ಯಂ ವರ್ತ ಏವ ಚ ಕರ್ಮಣಿ॥೨೨॥
na me pārthāsti kartavyaṃ triṣu lokeṣu kiṃcana |
nānavāptamavāptavyaṃ varta eva ca karmaṇi||22||
Gist of the sloka:
O Partha, there is nothing that I need to do in the 3 worlds, nor receive any benefit by doing so. I still involve myself in action, to set the model for the world.
Explanation:
O Partha, I am ever vigilant to the fact that the universe sees in Me, as a model to follow. Even though there is nothing that the universe can give me, nor I need from the universe, I still perform my actions, to set the example for the world.
Please note, Lord Krishna was known to diligently perform his obligatory rituals like Sandhyavandhana 3 times daily and other sacrifices and worship. He was known to wash the feet of the elders, welcome them personally, if required take them personally around Dwaraka and even send them off. The story of Kuchela/Sudhama his childhood friend needs to be remembered here.