योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-169, verse-28

अपूर्वैव घना निद्रा कापि सा तत्त्वदर्शिनाम् ।
प्रबुद्धानामपि हि या निमीलयति दृग्दृशौ ॥ २८ ॥

apūrvaiva ghanā nidrā kāpi sā tattvadarśinām ,
prabuddhānāmapi hi yā nimīlayati dṛgdṛśau 28

28. apūrvā eva ghanā nidrā kā api sā tattvadarśinām
prabuddhānām api hi yā nimīlayati dṛgdṛśau

28. tattvadarśinām sā kā api apūrvā eva ghanā nidrā
yā prabuddhānām api hi dṛgdṛśau nimīlayati

28. Indeed, there is a unique and profound sleep belonging to those who perceive reality (tattva). For even the awakened, it indeed closes their perceptions (dṛgdṛśau).

Words meanings summery:

• अपूर्वा (apūrvā) - unique (unprecedented, unique, not existing before)

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

• घना (ghanā) - profound (dense, profound, thick, solid)

• निद्रा (nidrā) - sleep (sleep, slumber)

• का (kā) - some kind of (what, which, some kind of (feminine))

• अपि (api) - a particle indicating 'some' or 'a certain' (even, also, too, a particle (often intensifying or indicating 'any' with interrogatives))

• सा (sā) - that (sleep) (she, that (feminine))

• तत्त्वदर्शिनाम् (tattvadarśinām) - of those who perceive reality (of those who perceive reality, of the seers of truth)

• प्रबुद्धानाम् (prabuddhānām) - of the awakened (of the awakened ones, of those who have woken up)

• अपि (api) - even (even, also, too, a particle (often intensifying or indicating 'any' with interrogatives))

• हि (hi) - indeed (indeed, surely, because, for)

• या (yā) - which (sleep) (which, who (feminine))

• निमीलयति (nimīlayati) - closes (their perceptions) (closes, makes to close, shuts (eyes))

• दृग्दृशौ (dṛgdṛśau) - perceptions (dual) (the two eyes, perceptions (dual))

Words meanings and morphology

अपूर्वा (apūrvā) - unique (unprecedented, unique, not existing before)

(adjective)

Nominative, feminine, singular of apūrva

apūrva - unprecedented, unique, novel, not existing before

Derived from 'pūrva' (former, before) with a negative prefix 'a-'

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

(indeclinable)

घना (ghanā) - profound (dense, profound, thick, solid)

(adjective)

Nominative, feminine, singular of ghana

ghana - dense, thick, profound, solid, abundant, mass

निद्रा (nidrā) - sleep (sleep, slumber)

(noun)

Nominative, feminine, singular of nidrā

nidrā - sleep, slumber, drowsiness

का (kā) - some kind of (what, which, some kind of (feminine))

(pronoun)

Nominative, feminine, singular of kim

kim - what, which, who, whether

अपि (api) - a particle indicating 'some' or 'a certain' (even, also, too, a particle (often intensifying or indicating 'any' with interrogatives))

(indeclinable)

सा (sā) - that (sleep) (she, that (feminine))

(pronoun)

Nominative, feminine, singular of tad

tad - that, he, she, it

तत्त्वदर्शिनाम् (tattvadarśinām) - of those who perceive reality (of those who perceive reality, of the seers of truth)

(noun)

Genitive, masculine, plural of tattvadarśin

tattvadarśin - one who perceives reality, a seer of truth, philosopher

Agent Noun

Derived from 'tattva' (reality) and the root 'dṛś' (to see) with the agent suffix '-in'

Compound type : tatpuruṣa (tattva+darśin)

• tattva – reality, truth, principle, essence
  noun (neuter)
• darśin – seeing, showing, one who sees
  adjective (masculine)
  Agent Noun
  Agent noun formed from root dṛś with suffix -in
  Root: dṛś (class 1)

प्रबुद्धानाम् (prabuddhānām) - of the awakened (of the awakened ones, of those who have woken up)

(adjective)

Genitive, masculine, plural of prabuddha

prabuddha - awakened, enlightened, fully aware

Past Passive Participle

Past Passive Participle of root 'budh' with upasarga 'pra-'

Prefix: pra

Root: budh (class 1)

अपि (api) - even (even, also, too, a particle (often intensifying or indicating 'any' with interrogatives))

(indeclinable)

हि (hi) - indeed (indeed, surely, because, for)

(indeclinable)

या (yā) - which (sleep) (which, who (feminine))

(pronoun)

Nominative, feminine, singular of yad

yad - which, what, whoever, whatever

निमीलयति (nimīlayati) - closes (their perceptions) (closes, makes to close, shuts (eyes))

(verb)

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

Causative

Causative form of root 'mīl' with upasarga 'ni-'

Prefix: ni

Root: mīl (class 0)

दृग्दृशौ (dṛgdṛśau) - perceptions (dual) (the two eyes, perceptions (dual))

(noun)

Accusative, feminine, dual of dṛś

dṛś - eye, sight, vision, appearance