One verse

Srimad Bhagavatam 11.26.23

11.26.23

अद‍ृष्टादश्रुताद् भावान्न भाव उपजायते । असम्प्रयुञ्जत: प्राणान् शाम्यति स्तिमितं मन: ॥ २३ ॥

adṛṣṭād aśrutād bhāvān na bhāva upajāyate asamprayuñjataḥ prāṇān śāmyati stimitaṁ manaḥ

adṛṣṭāt
which is not seen
aśrutāt
which is not heard
bhāvāt
from a thing
na
does not
bhāvaḥ
mental agitation
upajāyate
arise
asamprayuñjataḥ
for one who is not using
prāṇān
the senses
śāmyati
becomes pacified
stimitam
checked
manaḥ
the mind

Because the mind is not disturbed by that which is neither seen nor heard, the mind of a person who restricts the material senses will automatically be checked in its material activities and become pacified.