योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-13, verse-21

एक एव द्वितामेति स्वप्ने स्वमृतिबोधवत् ।
किंचित्स्थौल्यमिवादत्ते ततस्तारकतां विदन् ॥ २१ ॥

eka eva dvitāmeti svapne svamṛtibodhavat ,
kiṃcitsthaulyamivādatte tatastārakatāṃ vidan 21

21. ekaḥ eva dvitām eti svapne svamṛtibodhavat | kiñcit
sthaulyam iva ādatte tataḥ tārakatām vidan ||

21. ekaḥ eva svapne svamṛtibodhavat dvitām eti.
tataḥ tārakatām vidan (saḥ) kiñcit sthaulyam iva ādatte.

21. The single (consciousness) alone attains duality, just as in a dream one experiences the perception of one's own death (which is illusory). Then, understanding its inherent subtle, luminous nature (tārakatā), it subsequently takes on a certain degree of grossness.

Words meanings summery:

• एकः (ekaḥ) - the single (consciousness) (one, single, alone)

• एव (eva) - alone, indeed (only, just, indeed, precisely)

• द्विताम् (dvitām) - duality, the state of being two (duality, twoness)

• एति (eti) - attains, becomes (goes, attains, becomes)

• स्वप्ने (svapne) - in a dream (in a dream, during sleep)

• स्वमृतिबोधवत् (svamṛtibodhavat) - like the perception of one's own death (which is illusory) (like the perception of one's own death)

• किञ्चित् (kiñcit) - a certain degree, somewhat (something, a little, somewhat)

• स्थौल्यम् (sthaulyam) - grossness (grossness, corpulence, thickness)

• इव (iva) - as if (like, as, as if)

• आदत्ते (ādatte) - takes on, assumes (takes, takes on, assumes, receives)

• ततः (tataḥ) - from that (state of duality), subsequently (from that, then, thereafter)

• तारकताम् (tārakatām) - its subtle, luminous nature; star-likeness (metaphor for subtlety or spiritual light) (star-likeness, subtlety, the state of being a pupil)

• विदन् (vidan) - understanding, perceiving (knowing, understanding, perceiving)

Words meanings and morphology

एकः (ekaḥ) - the single (consciousness) (one, single, alone)

(numeral)

एव (eva) - alone, indeed (only, just, indeed, precisely)

(indeclinable)

द्विताम् (dvitām) - duality, the state of being two (duality, twoness)

(noun)

Accusative, feminine, singular of dvitā

dvitā - duality, twoness, the state of being two

Abstract noun from dvi ('two') with suffix tā.

Note: Object of eti (attains).

एति (eti) - attains, becomes (goes, attains, becomes)

(verb)

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

Present active indicative

Class 2 verb, Parasmaipada

Root: i (class 2)

Note: Subject is ekaḥ.

स्वप्ने (svapne) - in a dream (in a dream, during sleep)

(noun)

Locative, masculine, singular of svapna

svapna - sleep, dream, dreaming

From root svap ('to sleep').

Root: svap (class 2)

स्वमृतिबोधवत् (svamṛtibodhavat) - like the perception of one's own death (which is illusory) (like the perception of one's own death)

(adjective)

Nominative, masculine, singular of svamṛtibodhavat

svamṛtibodhavat - like the perception of one's own death

Bahuvrīhi compound with vat suffix, meaning 'like'.

Compound type : bahuvrīhi (sva+mṛti+bodha+vat)

• sva – one's own, self
  pronoun (masculine)
• mṛti – death, dying
  noun (feminine)
  From root mṛ ('to die').
  Root: mṛ (class 6)
• bodha – perception, knowledge, awakening
  noun (masculine)
  From root budh ('to know').
  Root: budh (class 1)
• vat – like, as, similar to
  indeclinable
  Suffix forming adjectives or adverbs of comparison.

Note: Adverbial in function, modifying eti. Declines as an adjective.

किञ्चित् (kiñcit) - a certain degree, somewhat (something, a little, somewhat)

(indeclinable)

From kim + cit

Note: Used here as an adverbial modifier.

स्थौल्यम् (sthaulyam) - grossness (grossness, corpulence, thickness)

(noun)

Accusative, neuter, singular of sthaulya

sthaulya - grossness, corpulence, thickness, substantiality

Abstract noun from sthūla ('gross, bulky') with suffix ṣyañ (ya).

Note: Object of ādatte.

इव (iva) - as if (like, as, as if)

(indeclinable)

आदत्ते (ādatte) - takes on, assumes (takes, takes on, assumes, receives)

(verb)

3rd person , singular, middle, present (laṭ) of ā-dā

Present middle indicative

Class 3 verb, Ātmanepada, with prefix ā.

Prefix: ā

Root: dā (class 3)

Note: Subject is ekaḥ.

ततः (tataḥ) - from that (state of duality), subsequently (from that, then, thereafter)

(indeclinable)

Adverbial derivation from tad ('that')

तारकताम् (tārakatām) - its subtle, luminous nature; star-likeness (metaphor for subtlety or spiritual light) (star-likeness, subtlety, the state of being a pupil)

(noun)

Accusative, feminine, singular of tārakatā

tārakatā - star-likeness, subtlety, the state of being a pupil (of the eye), salvific nature

Abstract noun from tāraka ('star, pupil, salvific') with suffix tā.

Root: tṛ (class 1)

Note: Object of vidan.

विदन् (vidan) - understanding, perceiving (knowing, understanding, perceiving)

(adjective)

Nominative, masculine, singular of vid

vid - to know, to understand, to perceive

Present active participle

Class 2 verb, Parasmaipada (vetti, but vidan is from a different class participle or special form). The root 'vid' has multiple forms/classes depending on meaning (e.g., vid-2P 'to know', vid-6P 'to find'). vidan is for 'to know'.

Root: vid (class 2)

Note: Functions as a predicative adjective or present participle modifying the implicit subject.