A Summary of the Srimad Bhagavata Mahapuranam-4.12.

4.The Stories of Siva and Sati, and Rishabhadeva and Bharata-12.

Sri Krishna said,

“You are a blessed man to have that vision.
It was Bhagavan Sankara himself, invisibly moving in the battlefield to help you.
Otherwise, even with all your archery, with all your might and mane, with all your knowledge and power, do you believe that you can face people like Bhishma, Drona and Karna?

They are all a hundred times stronger than you.
Siva, in his compassion, came uninvited to bless you because of your goodness.
He did not engage in battle, and did not come to wage war with the Kurus, but his very presence was enough to paralyse the strength of all the Kurus.
The odour emanating from his body was enough to cow down everybody and make them lose all their strength.
Such is the glory of Siva, the great Sankara Bhagavan; and you had his darshan.

Blessed you are, Arjuna! He is Ashutosh—immediately pleased. Ask, and it is given immediately. You did not call him, but he knew that you required help. Unsolicited, the great master, the great god, came to you. This is Tripurari, Mahadeva, Sankara, Rudra, Siva. He was in the air, moving about without touching the ground. His blessing is upon you.”

Swami Krishnananda
To be continued ..