One verse

Srimad Bhagavatam 11.23.60

11.23.60

तस्मात् सर्वात्मना तात निगृहाण मनो धिया । मय्यावेशितया युक्त एतावान् योगसङ्ग्रह: ॥ ६० ॥

tasmāt sarvātmanā tāta nigṛhāṇa mano dhiyā mayy āveśitayā yukta etāvān yoga-saṅgrahaḥ

tasmāt
therefore
sarva-ātmanā
in all respects
tāta
My dear Uddhava
nigṛhāṇa
bring under control
manaḥ
the mind
dhiyā
with intelligence
mayi
in Me
āveśitayā
which is absorbed
yuktaḥ
linked up
etāvān
thus
yoga-saṅgrahaḥ
the essence of spiritual practice

My dear Uddhava, fixing your intelligence on Me, you should thus completely control the mind. This is the essence of the science of yoga.