One verse

Srimad Bhagavatam 11.23.47

11.23.47

मनोवशेऽन्ये ह्यभवन् स्म देवा मनश्च नान्यस्य वशं समेति । भीष्मो हि देव: सहस: सहीयान् युञ्ज्याद वशे तं स हि देवदेव: ॥ ४७ ॥

mano-vaśe ’nye hy abhavan sma devā manaś ca nānyasya vaśaṁ sameti bhīṣmo hi devaḥ sahasaḥ sahīyān yuñjyād vaśe taṁ sa hi deva-devaḥ

manaḥ
of the mind
vaśe
under the control
anye
others
hi
indeed
abhavan
have become
sma
in the past
devāḥ
the senses (represented by their presiding deities)
manaḥ
the mind
ca
and
na
never
anyasya
of another
vaśam
under the control
sameti
comes
bhīṣmaḥ
fearsome
hi
indeed
devaḥ
the godlike power
sahasaḥ
than the strongest
sahīyān
stronger
yuñjyāt
can fix
vaśe
under control
tam
that mind
saḥ
such a person
hi
indeed
deva-devaḥ
the master of all the senses

All the senses have been under the control of the mind since time immemorial, and the mind himself never comes under the sway of any other. He is stronger than the strongest, and his godlike power is fearsome. Therefore, anyone who can bring the mind under control becomes the master of all the senses.