हठयोग प्रदीपिका (योगी स्वात्माराम - ज्योत्स्ना टीका सहित सटीक)

HAṬHAYOGAPRADĪPIKĀ 71
the real Khecarī. By the practice of Khecarī-mudrā,
the Unmanī-avasthā follows.
If the Suṣumnā is not filled by the Prāṇa at the near end,
but only by the Khecarī-mudrā, i.e. by the position of the tongue
at the rear end, it leads to a state of stupor. This is not the real
Khecarī-mudrā.
48. Between the eyebrows is the seat of Śiva,
wherein the mind is quiescent. This state is known
as the Turya [fourth state of consciousness, beyond
the states of waking, dream, and dreamless sleep].
There, Time (Death) is not.
49. One should practise the Khecarī, until he
experiences the Yoga-sleep. For one who is in this
Yoga-sleep, Time (Death) does not exist.
50. After making the mind supportless [freeing it
of every object and concept], one should not think of
anything. He is then indeed like a pot filled inside
and outside with ākāśa.
51. When the external breath is stopped [by
the practice of Khecarī], likewise the middle one [the
breath within the body is also suspended]. There is
no doubt about it. Then the Prāṇa, along with the
mind, becomes still in its own place (Brahmarandhra).
52. [In the practitioner] who thus practises the
course of Prāṇa [i.e. through Suṣumnā] night and day,
where the Prāṇa through practice is absorbed, there the
mind also is absorbed.
53. One should inundate the body from head to
foot with the nectar [flowing from the Moon]. He