HYP, Prathama upadeśaḥ, 44.2 tathaikasminn eva dṛḍhe siddhe siddhāsane sati //

HYP, Dvitīya upadeśaḥ, 1.1 athāsane dṛḍhe yogī vaśī hitamitāśanaḥ /

HYP, Dvitīya upadeśaḥ, 13.2 dṛḍhatā laghutā caiva tena gātrasya jāyate //

HYP, Dvitīya upadeśaḥ, 64.2 dhārayen nāsikāṃ madhyātarjanībhyāṃ vinā dṛḍham //

HYP, Tṛtīya upadeshaḥ, 10.2 prasāritaṃ padaṃ kṛtvā karābhyāṃ dhārayed dṛḍham //

HYP, Tṛtīya upadeshaḥ, 20.1 pūrayitvā tato vāyuṃ hṛdaye cubukaṃ dṛḍham /

HYP, Tṛtīya upadeshaḥ, 60.2 uḍḍiyāne dṛḍhe bandhe muktiḥ svābhāvikī bhavet //

HYP, Tṛtīya upadeshaḥ, 70.1 kaṇṭham ākuñcya hṛdaye sthāpayec cibukaṃ dṛḍham /

HYP, Tṛtīya upadeshaḥ, 73.1 kaṇṭhasaṃkocanenaiva dve nāḍyau stambhayed dṛḍham /

HYP, Tṛtīya upadeshaḥ, 114.1 sati vajrāsane pādau karābhyāṃ dhārayed dṛḍham /

HYP, Tṛtīya upadeshaḥ, 124.1 iyaṃ tu madhyamā nāḍī dṛḍhābhyāsena yoginām /

HYP, Caturthopadeśaḥ, 72.2 dṛḍhāsano bhaved yogī jñānī devasamas tadā //

HYP, Caturthopadeśaḥ, 114.1 yāvan naiva praviśati caran māruto madhyamārge yāvad vidur na bhavati dṛḍhaḥ prāṇavātaprabandhāt /