Canto 1 Chapter 9 Text 35
nija-parayor balayo ratham nivesya
sthitavati para-sainikayur aksna
hrtavati partha-sakhe ratir mamastu
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. Let my mind be fixed upon that Krsna.