PĀRTHA-SARATHI
Bhismadeva said, "I concentrate my mind upon the chariot driver of Arjuna who stood with a whip in His right hand and a bridle rope in His left, who was very careful to give protection to Arjuna's chariot by all means. Those who saw Him on the Battlefield of Kurukṣetra attained their original forms after death.
"In obedience to the command of His friend, Lord Sri Krsna entered the arena of the Battlefield of Kuruksetra between the soldiers of Arjuna and Duryodhana, and while there He shortened the life spans of the opposite party by His merciful glance. This was done simply by His looking at the enemy.
The Lord, being the supreme living being, is never the order supplier or order carrier of anyone, whoever he may be. But out of His causeless mercy and affection for His pure devotees, sometimes He carries out the order of the devotee like an awaiting servant. By executing the order of a devotee, the Lord becomes pleased, as a father is pleased to carry out the order of his small child. This is possible only out of pure transcendental love between the Lord and His devotees.