Where the mind goes, prāṇa goes;where the prāṇa goes, the mind goes.The dissolution of both must be done by one who practices haṭha through nāda.

Yato manas tataḥ prāṇaḥ — where the mind (goes), there the prāṇa (goes).Yataḥ prāṇas tato manaḥ — where the prāṇa (goes), there the mind (goes).This mutual interdependence is the theoretical basis of haṭha yoga.Mind and prāṇa are like two sides of the same coin;To move one is to move the other.

Haṭha yoga takes advantage of this connection: working with the breath (more accessible and tangible), it influences the mind (more subtle and elusive).It is reverse engineering of consciousness.

Tayor vilayataḥ kāryam — the dissolution of both must be done.The goal is not to control mind and prāṇa indefinitely but to dissolve them at their source.Haṭha-nāda-anusandhinā — by one who practices haṭha by investigating nāda.The combination of haṭha yoga techniques with inner sound meditation produces this dissolution.The Bihar School emphasizes that nāda is the bridge between haṭha and rāja yoga.