One verse

Srimad Bhagavatam 7.13.9

7.13.9

न यतेराश्रम: प्रायो धर्महेतुर्महात्मन: । शान्तस्य समचित्तस्य बिभृयादुत वा त्यजेत् ॥ ९ ॥

na yater asramah prayo dharma-hetur mahatmanah santasya sama-cittasya bibhryad uta va tyajet

na
not
yateh
of the sannyasi
asramah
the symbolic dress (with danda and kamandalu)
prayah
almost always
dharma-hetuh
the cause of advancement in spiritual life
maha-atmanah
who is factually exalted and advanced
santasya
who is peaceful
sama-cittasya
who has attained the stage of being equipoised
bibhryat
one may accept (such symbolic signs)
uta
indeed
va
or
tyajet
one may give up.

A peaceful, equipoised person who is factually advanced in spiritual consciousness does not need to accept the symbols of a sannyasi, such as the tridanda and kamandalu. According to necessity, he may sometimes accept those symbols and sometimes reject them.