The aura of a Sant.  The flow of Amrit from the body to the surroundings forms our aura.  It is difficult to gauge the dimensions of this aura.  This is the reason whenever there is a Sant sitting in the Sangat there is a special kind of a blissful and peaceful feeling the Sangat gets.  Because this aura of the Sant, or the Amrit Chattar as it is called, removes the effect of Maya.  Panj Doots become inactive and the minds of the ones sitting in the Sangat feels peace.    See Charan Sharan.