Param
Param means, variously, "highest", "supreme", "beyond" and "transcendental"
The Param mukta (who is in param mukti) is the Perfect Master (Sadguru in Vedanta or Qutub in Sufism). There are five perfect masters on earth at all times. The consciousness of these individuals is identical to the consciousness of the Jivanmukta. These souls have the duty and the authority to act in the spiritual hierarchy for the good of mankind and for the well being of the creation. They lead the life of "God on earth" and wield divine power where necessary. The perfect master sees every being as an aspect of his own self, loving and serving all from the basis of infinite love, power, knowledge, and bliss. These five Masters call down the Avatar (the Christ or Bhagwan) at the end of every cycle, that is, once in every 11 ages; once every 700 to 1400 years. The avatars of the past cycles are those who are revered as the founders of the world's great religions.
Read more about this topic: Videha Mukti