"In India, the rain, the tree, the river and the Saint are all regarded as symbols of selflessness. Rain comes for the benefit of all - humans, nature and animals equally. The tree offers its shade to all that seek shelter and yields its sweet fruit even to those who hurl stones at the tree to knock the fruit down. The river is also there for everyone. The deer quenches its thirst in the same river as the tiger and a Saint gives his blessing to all without distinction."
From a yoga website.