Guru Padmasambhava gave teachings and transmission of the Vajrayana to hundreds of disciples. His main students, The Twenty Five Disciples, are the root incarnations of the masters of this day. With his principle disciple, Yeshe Tsogyal, he concealed thousands of hidden teachings or Termas in many places for the benefit of future generations.
Some termas are discovered within the mindstream of realized disciples, and are revealed when most appropriate for the times. In this way each successive generation of students is able to make a new beginning with a fresh revelation that is suited to its particular needs and capacities.