What is the most important in the time of death

Quote from Mahabharata, Bhishma Parva, Bhagavadgita

When person leaves the body
And goes away from this world
He must close
Doors of his senses
Focus mind
To sanctuary of the heart
And life force
Hold at the top of head.

Being in such
Yogic concentration
Let he pronounce OM
And thinks about me
Who do that will reach
His highest goal.

The one, whose mind is concentrated
The one, who always remembers me
Easily reach me.

Such great souls
That reached perfection
Come to me
And do not reborn more
In a world, full of suffering.