योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-57, verse-47

संवित्स्वप्नार्थयोर्द्वित्वं न कदाचन लभ्यते ।
यथा द्रवत्वपयसोर्यथा वा स्पन्दवातयोः ॥ ४७ ॥

saṃvitsvapnārthayordvitvaṃ na kadācana labhyate ,
yathā dravatvapayasoryathā vā spandavātayoḥ 47

47. saṃvit-svapnārthayoḥ dvītvam na kadācana labhyate
yathā dravatva-payasoḥ yathā vā spanda-vātayoḥ

47. yathā dravatva-payasoḥ dvītvam na labhyate,
yathā vā spanda-vātayoḥ,
(tathā) saṃvit-svapnārthayoḥ dvītvam na kadācana labhyate

47. Duality is never found between consciousness (saṃvid) and dream-objects, just as it is not found between liquidity and water, or between movement and wind.

Words meanings summery:

• संवित्-स्वप्नार्थयोः (saṁvit-svapnārthayoḥ) - of consciousness and dream-objects

• द्वीत्वम् (dvītvam) - duality, twoness

• न (na) - not, no

• कदाचन (kadācana) - never, at no time

• लभ्यते (labhyate) - is obtained, is found, is perceived

• यथा (yathā) - just as, as, in which way

• द्रवत्व-पयसोः (dravatva-payasoḥ) - of liquidity and water

• यथा (yathā) - just as, as, in which way

• वा (vā) - or, optionally

• स्पन्द-वातयोः (spanda-vātayoḥ) - of movement and wind

Words meanings and morphology

संवित्-स्वप्नार्थयोः (saṁvit-svapnārthayoḥ) - of consciousness and dream-objects

(noun)

Genitive, masculine, dual of saṃvit-svapnārtha

saṁvit-svapnārtha - consciousness and dream-objects

Compound noun

Compound type : dvandva (saṃvid+svapnārtha)

• saṃvid – consciousness, knowledge
  noun (feminine)
  Derived from root vid (to know) with prefix sam-
  Prefix: sam
  Root: vid (class 2)
• svapnārtha – dream-object, meaning of a dream
  noun (masculine)
  Compound noun

द्वीत्वम् (dvītvam) - duality, twoness

(noun)

Nominative, neuter, singular of dvītva

dvītva - duality, twoness, state of being two

Derived from dvi (two) with suffix -tva

न (na) - not, no

(indeclinable)

कदाचन (kadācana) - never, at no time

(indeclinable)

लभ्यते (labhyate) - is obtained, is found, is perceived

(verb)

3rd person , singular, passive, present (laṭ) of labh

Root: labh (class 1)

यथा (yathā) - just as, as, in which way

(indeclinable)

द्रवत्व-पयसोः (dravatva-payasoḥ) - of liquidity and water

(noun)

Genitive, neuter, dual of dravatva-payas

dravatva-payas - liquidity and water

Compound noun

Compound type : dvandva (dravatva+payas)

• dravatva – liquidity, fluidity
  noun (neuter)
  Derived from drava (liquid) with suffix -tva
• payas – water, milk, fluid
  noun (neuter)

यथा (yathā) - just as, as, in which way

(indeclinable)

वा (vā) - or, optionally

(indeclinable)

स्पन्द-वातयोः (spanda-vātayoḥ) - of movement and wind

(noun)

Genitive, masculine, dual of spanda-vāta

spanda-vāta - movement and wind

Compound noun

Compound type : dvandva (spanda+vāta)

• spanda – movement, vibration, pulsation
  noun (masculine)
  Derived from root spand (to tremble, vibrate)
  Root: spand (class 1)
• vāta – wind, air
  noun (masculine)
  Derived from root vā (to blow)
  Root: vā (class 2)