हठयोग प्रदीपिका (योगी स्वात्माराम - ज्योत्स्ना टीका सहित सटीक)

16 HAṬHAYOGAPRADĪPIKĀ
The posture described first is called Siddhāsana. The same,
when assumed with the right heel against the perineum and the
left foot above the penis, is Vajrāsana. The Muktāsana consists
in placing one heel under the perineum and the other heel above
it. Guptāsana is described in verse 36 above.
38. The Siddha-s know that as among Yama-s
a moderate diet is the most important, and among
Niyama-s, harmlessness, so among all the Āsana-s is
the Siddhāsana.
39. Of the eighty-four postures, one should al-
ways practise Siddhāsana. It purifies the 72,000 Nāḍī-s.
40. The Yogin who, contemplating the Self
and following a moderate diet, continually practises
the Siddhāsana during twelve years, obtains fulfilment.
41. When the Siddhāsana is mastered, of what
use are the various other Āsana-s? When the vital
breath is well restrained by the practice of Kevala
Kumbhaka, the Unmanī-avasthā, which gives delight,
arises of its own without effort.
42. When there is complete mastery of the Siddhā-
sana alone, the three Bandha-s follow without effort
and naturally.
The Bandha-s are Mūla-bandha, Uḍḍīyāna-bandha and
Jālamdhara-bandha. As these and the Unmanī-avasthā are
described later on (III. 55 ff.), they are not explained here.
43. There is no Āsana like the Siddha, no Kum-
bhaka like the Kevala, no Mudrā like the Khecarī,
and no Laya (absorption of the mind) like that of the
inner sound (nāda).