हठयोग प्रदीपिका (योगी स्वात्माराम - ज्योत्स्ना टीका सहित सटीक)

HAṬHAYOGAPRADĪPIKĀ 75
70. Then the ĀRAMBHĀVASTHĀ [is described]:
When the knot of Brahmā (Brahmagranthi, which is
in the Anāhata-cakra) is pierced [by Prāṇāyāma],
there is the bliss arising from the void [śūnya or ākāśa
of the heart]. Various tinkling sounds [as of ornaments]
and the unstruck sound (anāhata-dhvani) are heard
[in the middle of] the body.
71. When there is the beginning [of the sound]
in the void, the Yogin is possessed of a lustrous body,
he is radiant, with an exquisite fragrance, free of diseases
and has a full heart [i.e. filled by Prāṇa and Bliss].
The ākāśa of the Anāhata-cakra (heart) is called Śūnya, that
of the Viśuddhi-cakra (throat), Atiśūnya, and that of the Ājñā-
cakra (forehead), Mahāśūnya.
72. Then the GHAṬĀVASTHĀ [is described]: In the
second [stage], the Prāṇa unites [with Apāna, Nāda
and Bindu] and enters the middle Cakra. The Yogin
then becomes firm in posture (āsana), wise, and com-
parable to the Gods.
In this stage, the Prāṇa and the Apāna, the Nāda and Bindu,
the Jīvātman and the Paramātman are united. The middle
Cakra is the Viśuddhi-cakra in the throat.
73. When the knot of Viṣṇu [Viṣṇu-granthi,
which is in the throat] is then pierced [by the Prāṇa
in Kumbhaka] there is the promise of supreme bliss.
In the Atiśūnya, then, there arises a rumbling sound
as of a kettledrum.
74. Then the PARICAYĀVASTHĀ [is described]:
In the third stage, a sound like that of a drum (mardala)