योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-81, verse-51

रेचकेन प्रयोगेण नाड्यन्तरनिरोधिना ।
मुहूर्ते स्थितिमाप्नोति तदा व्योमगदर्शनम् ॥ ५१ ॥

recakena prayogeṇa nāḍyantaranirodhinā ,
muhūrte sthitimāpnoti tadā vyomagadarśanam 51

51. recakena prayogeṇa nāḍyantranirodhinā
muhūrte sthitim āpnoti tadā vyomagadarśanam

51. tadā recakena nāḍyantranirodhinā prayogeṇa
muhūrte sthitim vyomagadarśanam āpnoti

51. Then, through the practice of exhalation (rećaka) that obstructs the interior of the channels (nāḍī), one achieves a momentary stability and the vision of traversing space.

Words meanings summery:

• रेचकेन (recakena) - by the practice of exhalation (rećaka) (by exhalation, by expulsion)

• प्रयोगेन (prayogena) - by the application, by the practice, by the method

• नाड्यन्त्रनिरोधिना (nāḍyantranirodhinā) - by that which obstructs the interior of the channels (nāḍī)

• मुहूर्ते (muhūrte) - for a moment, in a short time

• स्थितिम् (sthitim) - stability, state, position

• आप्नोति (āpnoti) - attains, achieves, reaches

• तदा (tadā) - then, at that time

• व्योमगदर्शनम् (vyomagadarśanam) - the vision of moving in space, the experience of sky-going

Words meanings and morphology

रेचकेन (recakena) - by the practice of exhalation (rećaka) (by exhalation, by expulsion)

(noun)

Instrumental, masculine, singular of recaka

recaka - exhalation, expulsion, emptying

From root 'ric' (to empty) with suffix -aka

Root: ric (class 7)

Note: Means by which stability is attained.

प्रयोगेन (prayogena) - by the application, by the practice, by the method

(noun)

Instrumental, masculine, singular of prayoga

prayoga - application, practice, method, use, experiment

From root 'yuj' with prefix 'pra'

Prefix: pra

Root: yuj (class 7)

Note: Qualifies 'recakena' or provides the context of the action.

नाड्यन्त्रनिरोधिना (nāḍyantranirodhinā) - by that which obstructs the interior of the channels (nāḍī)

(adjective)

Instrumental, masculine, singular of nāḍyantranirodhin

nāḍyantranirodhin - obstructing the interior of the nāḍīs

Compound adjective from nāḍī, antara, and nirodhin

Compound type : tatpuruṣa (nāḍī+antara+nirodhin)

• nāḍī – subtle channel, nerve, artery
  noun (feminine)
• antara – interior, inside, middle, interval
  noun (neuter)
• nirodhin – obstructing, restraining, checking
  adjective (masculine)
  Agent noun/adjective from root 'rudh' with prefix 'ni'
  Suffix -in added to root 'rudh' with 'ni'
  Prefix: ni
  Root: rudh (class 7)

Note: Qualifies 'recakena' or 'prayogena'.

मुहूर्ते (muhūrte) - for a moment, in a short time

(noun)

Locative, masculine, singular of muhūrta

muhūrta - moment, instant, specific division of time (48 minutes)

Note: Used adverbially to indicate duration or brevity.

स्थितिम् (sthitim) - stability, state, position

(noun)

Accusative, feminine, singular of sthiti

sthiti - standing, state, condition, stability, position

From root 'sthā' (to stand)

Root: sthā (class 1)

Note: Object of 'āpnoti'.

आप्नोति (āpnoti) - attains, achieves, reaches

(verb)

3rd person , singular, active, present (laṭ) of āpno

present active

Root 'āp', class 5 verb

Root: āp (class 5)

Note: The main verb, subject is an implied yogi.

तदा (tadā) - then, at that time

(indeclinable)

Note: Links to the 'yadā' clause of the previous verse.

व्योमगदर्शनम् (vyomagadarśanam) - the vision of moving in space, the experience of sky-going

(noun)

Accusative, neuter, singular of vyomagadarśana

vyomagadarśana - vision of movement in the sky, sight of one who goes in the ether

Compound type : tatpuruṣa (vyomaga+darśana)

• vyomaga – sky-going, moving in the ether
  adjective (masculine)
  From 'vyoman' (sky) and 'ga' (going)
  Root: gam (class 1)
• darśana – seeing, vision, insight, appearance, experience
  noun (neuter)
  From root 'dṛś' (to see)
  Root: dṛś (class 1)

Note: Object of 'āpnoti'.