Her Final Flight

The Doctor arrives on Refiloe and the TARDIS is on the edge of a cliff. The Doctor steps out of the TARDIS and falls from the cliff. He wakes many days later in a hut where he is being cared for by Peri. The TARDIS has been taken by the locals and they believe it heals them. It is in fact the energy that has been released when the TARDIS malfunctions.