As per Hindu beliefs, nature has got to have the given supernatural status. And because of this the waterfalls, mountains, rivers, trees and plants etc. are considered in the center of faith. Trees are considered sacred.
As per our scriptures and religious beliefs, the Pipal tree is one of the important and sacred trees for us. It is considered to be the abode of all Gods and it is called deity tree. In the Gita too, Lord Krishna described Pipal as his own incarnation.
The Skanda Purana has got its own specialty and religious significance. It is mentioned that Achyut Dev resides with Vishnu in the origin of Pipal, Keshava in the stem, Narayan in the branches, Hari in the leaves and all the deities in the fruits. All the Gods are pleased with this tree with reverence.
Pipal tree is also known as Akshaya tree, whose leaves never end. Pepper leaves are like human life; autumn comes; it starts to fall, but never gets together and then the new leaves on the tree make the tree green. This aspect of Pipal also shows the cycle of birth and death.
Sitting under Pipal:
In ancient times, the Sage-Muni used to sit under the tree of Pipal and used to perform persistent religious rituals, it is believed that the reward of Yagna or ritual sitting under the Pipal tree is renewable.
It is a common superstitious belief with Pipal tree that there is the habitation of demons and evil forces within them.
In fact, after burying the bones in a spell after the funeral, it is a practice to hang that Matki with a Pipal tree after tying it in a red cloth. Those bones are not taken home, hence they are tied with trees, that is why the belief that the soul of the deceased begins to dwell in the Pipal tree.