Pointing a finger at someone in India might mean that you are trying to threaten them or something. You might not understand it but by pointing a finger at someone you might hurt someone's emotions and offend them unintentionally and things can get ugly.
Luckily I'm an Indian and no one could give better answer to this question than me.
It means that you are commanding the person to mind his own work. Sometimes it provokes the opposite person which would result in a quarrel or argument
It means that you are commanding the person to mind his own work. Sometimes it provokes the opposite person which would result in a quarrel or argument