For
a sannyasi , the first qualification should be fearlessness.
Because a sannyasi has to be alone without any support
or guarantee of support, he has simply to depend upon the mercy of
the Supreme Personality of Godhead.
If he thinks "After leaving
my connections who will protect me?", he should not accept
the order of renounced life.
One must be fully convinced that
Krsna or the Supreme Personality of Godhead, in His localized
aspect of Paramatma is always within, that He is seeing everything
and that He always knows what one intends to do.
One must have
firm conviction that Krsna as Paramatma will take care of a soul
surrendered to Him.
"I shall never be alone", one should
think.
"Even if I live in the darkest regions of a forest I shall
be accompanied by Krsna, and He will give me all protection."
That conviction is called abhayam , without fear.
This
state of mind is necessary for a person in the renounced order of
life.
Bhagavad-gita As It Is, 16.1 Purport