sapadi sakhi-vaco niśamya madhye
nija-parayor balayo rathaṁ niveśya
sthitavati para-sainikāyur akṣṇā
hṛtavati pārtha-sakhe ratir mamāstu
And he immediately followed Arjuna’s order.
senayor ubhayor madhye ratham sthapaya me ’cyuta |
yavad etan niriksye ’ham yoddhukaman avasthitan ||
O Acyuta please station my chariot between the two armies, so I can view at the commencement of the war those situated with a desire to fight, and can see my companions in battle. BG.1.21
Just by his glance (aksna), showing to Arjuna “This is Bhisma, this is Drona, this is Karna,” he took away their lives. This actually indicates he took away their prarabdha-karma, since it will be said later yam iha niriksya hata gatah sva-rupam: those who saw him on the battlefield of Kuruksetra attained their original forms after death. (SB 1.9.39)