The heavenly drops fell on leaves and the leaves shed them away. The Dust went to the ground to reunite with there friends and families.
Some flew in the air and joined the heavenly drops. The leaves now look more green and fresh. The drops on them are the raindrops or the tears which they shed as they are separated from dust.
The long time of togetherness was washed away by the raindrops. The dust might also have cried when they left the leaves.
Somewhere it is separation and at someplace it is a union