योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-54, verse-59

यदा व्यथावशान्नाड्यः स्वसंकोचविकासनैः ।
गृह्णन्तिमारुतो देहे तदोज्झति निजां स्थितिम् ॥ ५९ ॥

yadā vyathāvaśānnāḍyaḥ svasaṃkocavikāsanaiḥ ,
gṛhṇantimāruto dehe tadojjhati nijāṃ sthitim 59

59. yadā vyathā-vaśāt nāḍyaḥ sva-saṃkoca-vikāsanaiḥ
gṛhṇanti mārutaḥ dehe tadā ujjhati nijām sthitim

59. yadā dehe nāḍyaḥ vyathā-vaśāt sva-saṃkoca-vikāsanaiḥ mārutaḥ gṛhṇanti,
tadā [saḥ mārutaḥ] nijām sthitim ujjhati.

59. When, due to pain, the subtle channels (nāḍīs) in the body affect the vital air (māruta) through their own contractions and expansions, then the vital air abandons its normal state.

Words meanings summery:

• यदा (yadā) - when, at which time

• व्यथा-वशात् (vyathā-vaśāt) - due to pain, owing to distress, by the force of suffering

• नाड्यः (nāḍyaḥ) - subtle energy channels (nāḍīs) (subtle channels, nerves, veins)

• स्व-संकोच-विकासनैः (sva-saṁkoca-vikāsanaiḥ) - by their own contractions and expansions

• गृह्णन्ति (gṛhṇanti) - they affect or influence (they seize, they take, they hold, they perceive, they affect)

• मारुतः (mārutaḥ) - the vital air (māruta) (vital air, wind, breath)

• देहे (dehe) - in the body

• तदा (tadā) - then, at that time

• उज्झति (ujjhati) - it abandons, forsakes, gives up

• निजाम् (nijām) - one's own, its own, inherent

• स्थितिम् (sthitim) - normal or stable state (state, condition, position, existence, stability)

Words meanings and morphology

यदा (yadā) - when, at which time

(indeclinable)

व्यथा-वशात् (vyathā-vaśāt) - due to pain, owing to distress, by the force of suffering

(noun)

Ablative, masculine, singular of vyathā-vaśa

vyathā-vaśa - power of pain, control by distress, subjection to suffering

Compound type : tatpuruṣa (vyathā+vaśa)

• vyathā – pain, distress, agony, suffering
  noun (feminine)
  Derived from root √vyath (to be agitated, suffer)
  Root: vyath (class 1)
• vaśa – power, control, will, subjection, influence
  noun (masculine)

नाड्यः (nāḍyaḥ) - subtle energy channels (nāḍīs) (subtle channels, nerves, veins)

(noun)

Nominative, feminine, plural of nāḍī

nāḍī - a tube, pipe, vein, artery, nerve, subtle energy channel

स्व-संकोच-विकासनैः (sva-saṁkoca-vikāsanaiḥ) - by their own contractions and expansions

(noun)

Instrumental, masculine, plural of sva-saṃkoca-vikāsana

sva-saṁkoca-vikāsana - contraction and expansion of oneself/itself

Compound type : dvandva (sva+saṃkoca+vikāsana)

• sva – one's own, self
  pronoun
• saṃkoca – contraction, shrinking, drawing in
  noun (masculine)
  From root √kuc (to contract, shrink) with prefix saṃ
  Prefix: sam
  Root: kuc (class 1)
• vikāsana – expansion, unfolding, opening, development
  noun (masculine)
  From root √kas (to open, expand) with prefix vi
  Prefix: vi
  Root: kas (class 1)

गृह्णन्ति (gṛhṇanti) - they affect or influence (they seize, they take, they hold, they perceive, they affect)

(verb)

3rd person , plural, active, present (laṭ) of grah

Root: grah (class 9)

Note: Subject is 'nāḍyaḥ'

मारुतः (mārutaḥ) - the vital air (māruta) (vital air, wind, breath)

(noun)

Nominative, masculine, singular of māruta

māruta - wind, air, vital air, a god of the storm

Note: Grammatically nominative, but functions as the entity being affected by 'gṛhṇanti'. Also the subject of 'ujjhati'.

देहे (dehe) - in the body

(noun)

Locative, masculine, singular of deha

deha - body, corporeal frame

तदा (tadā) - then, at that time

(indeclinable)

उज्झति (ujjhati) - it abandons, forsakes, gives up

(verb)

3rd person , singular, active, present (laṭ) of ut-jhā

Prefix: ut

Root: jhā (class 3)

Note: Subject is 'mārutaḥ'.

निजाम् (nijām) - one's own, its own, inherent

(adjective)

Accusative, feminine, singular of nija

nija - one's own, native, inherent, proper

Note: Agrees with 'sthitim'

स्थितिम् (sthitim) - normal or stable state (state, condition, position, existence, stability)

(noun)

Accusative, feminine, singular of sthiti

sthiti - standing, state, condition, position, stability, duration

From root √sthā (to stand)

Root: sthā (class 1)