योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-71, verse-45

यथा भूतात्मतत्त्वैकपरिज्ञानेन राघव ।
असत्तामेत्यलं चेतो दीपेनेव तमः क्षणात् ॥ ४५ ॥

yathā bhūtātmatattvaikaparijñānena rāghava ,
asattāmetyalaṃ ceto dīpeneva tamaḥ kṣaṇāt 45

45. yathā bhūtātmatattvaikaparijñānena rāghava |
asattām eti alam cetaḥ dīpena iva tamaḥ kṣaṇāt ||

45. rāghava yathā dīpena iva tamaḥ kṣaṇāt asattām eti,
(tathā) bhūtātmatattvaikaparijñānena cetaḥ alam asattām eti

45. Just as, O Rāghava, through the profound and sole understanding of the true nature of the self (ātman) in all beings, the mind (cetas) completely attains non-existence, swiftly, like darkness (tamas) by a lamp, in an instant.

Words meanings summery:

• यथा (yathā) - just as, as, like

• भूतात्मतत्त्वैकपरिज्ञानेन (bhūtātmatattvaikaparijñānena) - by the profound and sole knowledge of the true nature of the self in beings

• राघव (rāghava) - O Rāma (O Rāghava (descendant of Raghu, an epithet for Rāma))

• असत्ताम् (asattām) - non-existence, non-being

• एति (eti) - attains, goes to, reaches

• अलम् (alam) - completely, swiftly, indeed, enough

• चेतः (cetaḥ) - mind, consciousness

• दीपेन (dīpena) - by a lamp, by light

• इव (iva) - as if, like, resembling

• तमः (tamaḥ) - darkness, ignorance

• क्षणात् (kṣaṇāt) - instantly, in a moment, in a flash

Words meanings and morphology

यथा (yathā) - just as, as, like

(indeclinable)

भूतात्मतत्त्वैकपरिज्ञानेन (bhūtātmatattvaikaparijñānena) - by the profound and sole knowledge of the true nature of the self in beings

(noun)

Instrumental, neuter, singular of bhūtātmatattvaikaparijñāna

bhūtātmatattvaikaparijñāna - the sole perfect knowledge of the true nature of the self in all beings

Compound of bhūta (beings), ātman (self), tattva (truth/principle), eka (sole), parijñāna (perfect knowledge).

Compound type : tatpuruṣa (bhūta+ātman+tattva+eka+parijñāna)

• bhūta – being, creature, element, existing
  participle (neuter)
  Past Passive Participle
  Derived from root 'bhū' (to be).
  Root: bhū (class 1)
• ātman – self, soul, spirit, essential nature
  noun (masculine)
• tattva – truth, reality, principle, essence
  noun (neuter)
• eka – one, single, sole, unique
  adjective
• parijñāna – perfect knowledge, complete understanding
  noun (neuter)
  action noun
  Derived from root 'jñā' (to know) with upasarga 'pari'.
  Prefix: pari
  Root: jñā (class 9)

राघव (rāghava) - O Rāma (O Rāghava (descendant of Raghu, an epithet for Rāma))

(proper noun)

Vocative, masculine, singular of rāghava

rāghava - descendant of Raghu, belonging to Raghu's lineage

Derived from Raghu.

असत्ताम् (asattām) - non-existence, non-being

(noun)

Accusative, feminine, singular of asattā

asattā - non-existence, unreality, non-being

Negative particle 'a' + sattā (existence).

Compound type : tatpuruṣa (a+sattā)

• a – not, non-, un-
  indeclinable
  Negative prefix.
• sattā – existence, being, reality, entity
  noun (feminine)
  Derived from root 'as' (to be).
  Root: as (class 2)

एति (eti) - attains, goes to, reaches

(verb)

3rd person , singular, active, present (lat) of i

Root: i (class 2)

अलम् (alam) - completely, swiftly, indeed, enough

(indeclinable)

चेतः (cetaḥ) - mind, consciousness

(noun)

Nominative, neuter, singular of cetas

cetas - mind, consciousness, intellect

Derived from root 'cit' (to perceive, observe).

Root: cit (class 1)

दीपेन (dīpena) - by a lamp, by light

(noun)

Instrumental, masculine, singular of dīpa

dīpa - lamp, light, source of light

Derived from root 'dīp' (to shine).

Root: dīp (class 4)

इव (iva) - as if, like, resembling

(indeclinable)

तमः (tamaḥ) - darkness, ignorance

(noun)

Nominative, neuter, singular of tamas

tamas - darkness, ignorance, gloom, one of the three guṇas

क्षणात् (kṣaṇāt) - instantly, in a moment, in a flash

(noun)

Ablative, masculine, singular of kṣaṇa

kṣaṇa - moment, instant, very short time