SB 11.23.60

tasmāt sarvātmanā tāta
 nigṛhāṇa mano dhiyā
mayy āveśitayā yukta
 etāvān yoga-saṅgrahaḥ
Word for word: 
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.
Translation: 
My dear Uddhava, fixing your intelligence on Me, you should thus completely control the mind. This is the essence of the science of yoga.