यस्तु विज्ञानवान्भवति युक्तेन मनसा सदा । तस्येन्द्रियाणि वश्यानि सदश्वा इव सारथेः ॥ ६॥

ॐ

English Translation

But if the buddhi, being related to a mind that is always restrained, possesses discrimination, then the senses come under control, like the good horses of a charioteer. 

ॐ

English Commentary

But of him who is a driver, the contrary of one already explained, i.e., of the driver who knows and who has the mind always under restraint, the senses standing in the place of the horses can be let go or stopped, i.e., controlled like the good horses of the other driver.

Sri Shankaracharya