Bhagavatapurana 7.15.41

7.15.41

āhuḥ śarīraṃ rathamindriyāṇi hayān abhīṣūn mana indriyeśam /
vartmāni mātrā dhiṣaṇāṃ ca sūtaṃ sattvaṃ bṛhadbandhuramīśasṛṣṭam //

41. The wise say that the body is a chariot, the senses are horses, and the mind, the ruling sense, is the reins, the objects are destinations, and the thinking faculty (Reason) is the charioteer and the *heart* (V. Strength) is the all-encompassing cordage instituted by the Lord.