One verse

Srimad Bhagavatam 11.9.12

11.9.12

यस्मिन् मनो लब्धपदं यदेत- च्छनै: शनैर्मुञ्चति कर्मरेणून् । सत्त्वेन वृद्धेन रजस्तमश्च विधूय निर्वाणमुपैत्यनिन्धनम् ॥ १२ ॥

yasmin mano labdha-padaṁ yad etac chanaiḥ śanair muñcati karma-reṇūn sattvena vṛddhena rajas tamaś ca vidhūya nirvāṇam upaity anindhanam

yasmin
in which (the Supreme Lord)
manaḥ
the mind
labdha
having obtained
padam
a permanent situation
yat etat
that very mind
śanaiḥ śanaiḥ
gradually, step by step
muñcati
gives up
karma
of fruitive activities
reṇūn
the contamination
sattvena
by the mode of goodness
vṛddhena
which has grown strong
rajaḥ
the mode of passion
tamaḥ
the mode of ignorance
ca
also
vidhūya
giving up
nirvāṇam
the transcendental position in which one is united with the object of his meditation
upaiti
achieves
anindhanam
without fuel

The mind can be controlled when it is fixed on the Supreme Personality of Godhead. Having achieved a stable situation, the mind becomes free from polluted desires to execute material activities; thus as the mode of goodness increases in strength, one can completely give up the modes of passion and ignorance, and gradually one transcends even the material mode of goodness. When the mind is freed from the fuel of the modes of nature, the fire of material existence is extinguished. Then one achieves the transcendental platform of direct relationship with the object of his meditation, the Supreme Lord.