Everybody heard something crying aloud as soon as Prophet Muhammad (pbuh)left the tree stump that he had been using to convey his messages to his followers for a new mimbar. Initially no one knew who was crying. Then they realized that it was that tree stump. Prophet Muhammad (pbuh) approached the stump and stroked it. It stopped crying as soon as the Prophet pacified it by saying that it would be with him in the Heaven.
The message: Even a tree stump missed the prophet, what about us?