हठयोग प्रदीपिका (योगी स्वात्माराम - ज्योत्स्ना टीका सहित सटीक)

HAṬHAYOGAPRADĪPIKĀ 15
33. The Āsana-s propounded by Śiva are eighty-
four in number. Of those I shall describe four which
are the quintessence.
Gorakṣa says: ‘There are as many Āsana-s as there are
varieties of beings. Śiva has enumerated eighty-four lakhs and
he only knows them.’ Of these he selected eighty-four; among
these, four are the most important and useful.
34. These four, Siddha, Padma, Siṁha and
Bhadra [Āsana-s] are the most excellent. Of these
[four] the most comfortable, Siddhāsana, can always
be assumed.
35. The SIDDHĀSANA [is now described]: Press
the perineum with the base of the [left] heel and place
the [other] foot firmly above the penis [or pubis].
Keep the chin steadily on the breast. Remain motion-
less with the sense-organs under control and with
steady vision look at the spot between the eyebrows.
This is called Siddhāsana; it throws open the door
to emancipation.
36. According to another view, placing the left
ankle above the penis and keeping the other ankle
above it, is Siddhāsana.
The Siddhāsana described in the previous verse is practised
by the followers of Matsyendra. The one now described is pre-
ferred by other Yogin-s.
37. Some say this is Siddhāsana, others know it
as VAJRĀSANA; some call it MUKTĀSANA and others
speak of it as GUPTĀSANA.