योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-45, verse-63

जाग्रत्स्वप्नसुषुप्तानां स्वभावमिव तुर्यगः ।
वासनैव मनः सेयं स्वविचारेण नश्यति ॥ ६३ ॥

jāgratsvapnasuṣuptānāṃ svabhāvamiva turyagaḥ ,
vāsanaiva manaḥ seyaṃ svavicāreṇa naśyati 63

63. jāgrat-svapna-suṣuptānāṃ svabhāvam iva turyagaḥ
vāsanā eva manaḥ sā iyam sva-vicāreṇa naśyati

63. turyagaḥ jāgrat-svapna-suṣuptānāṃ svabhāvam iva
sā iyam manaḥ vāsanā eva sva-vicāreṇa naśyati

63. Just as the transcendent fourth state (turya) is the intrinsic nature (svabhāva) of the waking, dreaming, and deep sleep states, so this mind (manas) is merely mental impressions (vāsanā), and it is destroyed through self-inquiry.

Words meanings summery:

• जाग्रत्-स्वप्न-सुषुप्तानां (jāgrat-svapna-suṣuptānāṁ) - of the waking, dreaming, and deep sleep states

• स्वभावम् (svabhāvam) - the fundamental reality or essence (the intrinsic nature, characteristic state)

• इव (iva) - like, as, as if

• तुर्यगः (turyagaḥ) - the transcendent fourth state (turya) (one who goes to the fourth, pertaining to the fourth state)

• वासना (vāsanā) - mental impression, latent tendency, desire

• एव (eva) - indeed, only, just, certainly

• मनः (manaḥ) - mind, intellect, heart

• सा (sā) - she, that (feminine)

• इयम् (iyam) - this (feminine)

• स्व-विचारेण (sva-vicāreṇa) - by self-inquiry, by one's own reflection

• नश्यति (naśyati) - perishes, is destroyed, vanishes

Words meanings and morphology

जाग्रत्-स्वप्न-सुषुप्तानां (jāgrat-svapna-suṣuptānāṁ) - of the waking, dreaming, and deep sleep states

(noun)

Genitive, neuter, plural of jāgrat-svapna-suṣupta

jāgrat-svapna-suṣupta - waking, dreaming, and deep sleep (states)

Compound type : dvandva (jāgrat+svapna+suṣupta)

• jāgrat – waking, awake
  adjective
  Present Active Participle
  Present active participle of jāgṛ (to wake)
  Root: jāgṛ (class 2)
• svapna – dream, sleep
  noun (masculine)
  Root: svap (class 2)
• suṣupta – deep sleep
  noun (neuter)
  Past Passive Participle
  Past passive participle of svap (to sleep) with su- prefix and sandhi changes
  Prefix: su
  Root: svap (class 2)

Note: Refers to the three states of consciousness.

स्वभावम् (svabhāvam) - the fundamental reality or essence (the intrinsic nature, characteristic state)

(noun)

Accusative, masculine, singular of svabhāva

svabhāva - intrinsic nature, characteristic state, own being

Compound type : bahuvrīhi (sva+bhāva)

• sva – own, self
  pronoun
• bhāva – existence, being, state, nature
  noun (masculine)
  Root: bhū (class 1)

इव (iva) - like, as, as if

(indeclinable)

Note: Used for comparison.

तुर्यगः (turyagaḥ) - the transcendent fourth state (turya) (one who goes to the fourth, pertaining to the fourth state)

(noun)

Nominative, masculine, singular of turyaga

turyaga - going to the fourth, pertaining to the fourth state

Compound type : tatpuruṣa (turya+ga)

• turya – fourth
  numeral
• ga – going, moving, residing in
  suffix
  Suffix derived from root gam (to go)
  Root: gam (class 1)

Note: Here used to denote the fourth state itself as the underlying reality.

वासना (vāsanā) - mental impression, latent tendency, desire

(noun)

Nominative, feminine, singular of vāsanā

vāsanā - mental impression, latent tendency, desire

Root: vas (class 4)

एव (eva) - indeed, only, just, certainly

(indeclinable)

मनः (manaḥ) - mind, intellect, heart

(noun)

Nominative, neuter, singular of manas

manas - mind, intellect, heart

Root: man (class 4)

Note: Nom./Acc. singular of manas (neuter s-stem noun).

सा (sā) - she, that (feminine)

(pronoun)

Nominative, feminine, singular of tad

tad - that, she, it

Note: Refers to vāsanā.

इयम् (iyam) - this (feminine)

(pronoun)

Nominative, feminine, singular of idam

idam - this

Note: Refers to vāsanā.

स्व-विचारेण (sva-vicāreṇa) - by self-inquiry, by one's own reflection

(noun)

Instrumental, masculine, singular of sva-vicāra

sva-vicāra - self-inquiry, self-reflection, own consideration

Compound type : tatpuruṣa (sva+vicāra)

• sva – own, self
  pronoun
• vicāra – inquiry, reflection, consideration
  noun (masculine)
  From vi + car (to move, wander), literally 'moving through' (thoughts)
  Prefix: vi
  Root: car (class 1)

नश्यति (naśyati) - perishes, is destroyed, vanishes

(verb)

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

Root: naś (class 4)