योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-41, verse-52

यथा नौयानसंरम्भे वृक्षपर्वतवेपनम् ।
यथा स्वधातुसंक्षोभे पूर्वपर्वतनर्तनम् ॥ ५२ ॥

yathā nauyānasaṃrambhe vṛkṣaparvatavepanam ,
yathā svadhātusaṃkṣobhe pūrvaparvatanartanam 52

52. yathā nauyānasaṃrambhe vṛkṣaparvatavepanam
yathā svadhātusaṃkṣobhe pūrvaparvatanartanam

52. yathā nauyānasaṃrambhe vṛkṣaparvatavepanam (bhāti),
yathā svadhātusaṃkṣobhe pūrvaparvatanartanam (bhāti)

52. Just as, during the tumultuous motion of a boat, there appears to be a shaking of trees and mountains; and just as, from an agitation within one's own bodily constituents, there seems to be a dancing of previously stationary mountains.

Words meanings summery:

• यथा (yathā) - as, just as, like

• नौयानसंरम्भे (nauyānasaṁrambhe) - in the agitation/commotion of a boat journey

• वृक्षपर्वतवेपनम् (vṛkṣaparvatavepanam) - the shaking of trees and mountains

• यथा (yathā) - as, just as, like

• स्वधातुसंक्षोभे (svadhātusaṁkṣobhe) - in the agitation/disturbance of one's own bodily elements

• पूर्वपर्वतनर्तनम् (pūrvaparvatanartanam) - the dancing/swaying of previous/stable mountains

Words meanings and morphology

यथा (yathā) - as, just as, like

(indeclinable)

नौयानसंरम्भे (nauyānasaṁrambhe) - in the agitation/commotion of a boat journey

(noun)

Locative, masculine, singular of nauyānasaṃrambha

nauyānasaṁrambha - agitation/commotion of a boat journey, turbulent motion of a boat

Compound type : tatpuruṣa (nauyāna+saṃrambha)

• nauyāna – boat journey, sailing, navigation
  noun (neuter)
• saṃrambha – agitation, commotion, violent motion, fury
  noun (masculine)
  verbal noun
  from root 'rabh' (to act violently) with prefix 'sam'
  Prefix: sam
  Root: rabh (class 1)

वृक्षपर्वतवेपनम् (vṛkṣaparvatavepanam) - the shaking of trees and mountains

(noun)

Nominative, neuter, singular of vṛkṣaparvatavepana

vṛkṣaparvatavepana - the shaking of trees and mountains

Compound type : dvandva-tatpuruṣa (vṛkṣa+parvata+vepana)

• vṛkṣa – tree
  noun (masculine)
• parvata – mountain, hill
  noun (masculine)
• vepana – shaking, trembling, quivering
  noun (neuter)
  verbal noun
  from root 'vep' (to tremble) with suffix '-ana'
  Root: vep (class 1)

Note: Functions as the subject of an implied verb 'appears' or 'is perceived'.

यथा (yathā) - as, just as, like

(indeclinable)

स्वधातुसंक्षोभे (svadhātusaṁkṣobhe) - in the agitation/disturbance of one's own bodily elements

(noun)

Locative, masculine, singular of svadhātusaṃkṣobha

svadhātusaṁkṣobha - agitation/disturbance of one's own bodily elements/constituents

Compound type : tatpuruṣa (sva+dhātu+saṃkṣobha)

• sva – one's own, personal, inherent
  adjective
• dhātu – element, constituent of the body (e.g., blood, flesh, bone), root (of a verb), mineral
  noun (masculine)
• saṃkṣobha – agitation, disturbance, great commotion
  noun (masculine)
  verbal noun
  from root 'kṣubh' (to agitate, to be agitated) with prefix 'sam' and suffix '-a'
  Prefix: sam
  Root: kṣubh (class 4)

पूर्वपर्वतनर्तनम् (pūrvaparvatanartanam) - the dancing/swaying of previous/stable mountains

(noun)

Nominative, neuter, singular of pūrvaparvatanartana

pūrvaparvatanartana - the dancing/swaying of previously stable mountains

Compound type : tatpuruṣa (pūrva+parvata+nartana)

• pūrva – previous, former, prior, eastern
  adjective
• parvata – mountain, hill
  noun (masculine)
• nartana – dancing, causing to dance
  noun (neuter)
  verbal noun
  from root 'nṛt' (to dance) with suffix '-ana'
  Root: nṛt (class 4)

Note: Functions as the subject of an implied verb 'appears' or 'is perceived'.