हठयोग प्रदीपिका (योगी स्वात्माराम - ज्योत्स्ना टीका सहित सटीक)

HAṬHAYOGAPRADĪPIKĀ 47
52. Within the upper part of Meru [i.e. Suṣumnā]
in the cavity, which is the fountain-head of the Nāḍi-s,
is secreted the nectar. He of pure intellect [Sāttvic
in nature, unclouded by Rajas and Tamas] sees therein
the Truth [his own Ātman]. From the Moon there
flows out the nectar, the essence of the body, and hence
death comes to man. Therefore one should practise
the beneficial Khecarī-mudrā [to stop its downward
flow]. If not, there can be no bodily perfection
[endowing the body with beauty, grace, strength and
self-control].
53. The cavity is the conjunction of the five
streams and confers divine knowledge. In the void
of that cavity, untainted [by the effects of avidyā or
nescience, grief and delusion] the Khecarī-mudrā is
firmly lodged.
The streams referred to in the above stanzas are the many
Nāḍi-s, Iḍā, Piṅgalā, Suṣumnā, Gāndhārī, etc. which stand
for the rivers Gaṅgā, Yamunā, Sarasvatī, Narmadā, etc.
54. There is only one germ of evolution [i.e. Oṃ];
there is only one Mudrā, Khecarī; only one deity, not
dependent on anything; and only one [spiritual] state,
Manonmanī.
As the other things mentioned are the most important of their
class, so is Khecarī the best of Mudrā-s.
55. Then the UḌḌĪYĀNA-BANDHA [is described]:
Uḍḍīyāna-bandha is so called by the Yogin-s, for when
it is practised the Prāṇa is arrested and flies through
the Suṣumnā.