Yoga Sūtra Chapter Two verse 55

ततः परमावश्यता इन्द्रियाणाम् ॥५५॥

tataḥ paramā vaśyatā-indriyāṇām ||55||

From that, best control of the senses.

tatas - hence, from thatparama - highest, mostvaśyatā - controlindriya - faculty of sense; sense; organ of sense