4-But Bhima offered to the Lord mentally the Bilva leaves of all the Bilva trees of the whole world.
He was doing Manasika Puja of Lord Shiva.
The attendants of Lord Shiva were not able to remove from the head of Lord Shiva the Bilva leaves offered by Bhima. (4/15)
5-Arjuna once saw a large band of people carrying baskets of Bilva leaves.
He thought within himself that the leaves must be those offered by him to Lord Shiva and questioned them thus - "Brothers, from where do you carry these Bilva leaves?" (5/15)