Q: How is mouna (silence) possible when we are engaged in worldly transactions?
Maharshi: When women walk with water pots on their heads, they are able to talk with their companions while all the time remaining intent on the water above. Similarly, when a sage engages in activities, they do not disturb him because his mind abides in Brahman.
The difficulty is that people think they are the doer; it is a mistake. It is the higher power which does everything and people are only a tool. If they accept that position, they will be free from troubles; otherwise they court them. Do your work without anticipating its fruits. That is all that you should do.