Avatars
The avatars come down for a definite purpose, endowed with all the necessary powers required for the accomplishment of the work allotted to them. That may, in other words, serve to be their samskaras which brought them down into the world. The power withdraws them after their work is finished.
Taken from the book "Complete Works of Ram Chandra, Vol. 1 (1st Indian edn., 1989)", Chapter "Reality – Its Static and Dynamic Aspects", pg. 320, by Babuji Maharaj