One verse

Srimad Bhagavatam 7.15.32-33

7.15.32-33

प्राणापानौ सन्निरुन्ध्यात्पूरकुम्भकरेचकै: । यावन्मनस्त्यजेत कामान्स्वनासाग्रनिरीक्षण: ॥ ३२ ॥ यतो यतो नि:सरति मन: कामहतं भ्रमत् । ततस्तत उपाहृत्य हृदि रुन्ध्याच्छनैर्बुध: ॥ ३३ ॥

pranapanau sannirundhyat pura-kumbhaka-recakaih yavan manas tyajet kaman sva-nasagra-niriksanah yato yato nihsarati manah kama-hatam bhramat tatas tata upahrtya hrdi rundhyac chanair budhah

prana
incoming breath
apanau
outgoing breath
sannirundhyat
should stop
pura-kumbhaka-recakaih
by inhaling, exhaling and holding, which are technically known as puraka, kumbhaka and recaka
yavat
so long
manah
the mind
tyajet
should give up
kaman
all material desires
sva
one’s own
nasa-agra
the tip of the nose
niriksanah
looking at
yatah yatah
from whatever and wherever
nihsarati
withdraws
manah
the mind
kama-hatam
being defeated by lusty desires
bhramat
wandering
tatah tatah
from here and there
upahrtya
after bringing it back
hrdi
within the core of the heart
rundhyat
should arrest (the mind)
sanaih
gradually, by practice
budhah
a learned yogi.

While continuously staring at the tip of the nose, a learned yogi practices the breathing exercises through the technical means known as puraka, kumbhaka and recaka — controlling inhalation and exhalation and then stopping them both. In this way the yogi restricts his mind from material attachments and gives up all mental desires. As soon as the mind, being defeated by lusty desires, drifts toward feelings of sense gratification, the yogi should immediately bring it back and arrest it within the core of his heart.