योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-14, verse-79

चिदेकत्वात्प्रसङ्गः स्यात्कस्तत्रेतरविभ्रमः ।
शिलाहृदयपीनापि स्वाकाशे विशदैव चित् ॥ ७९ ॥

cidekatvātprasaṅgaḥ syātkastatretaravibhramaḥ ,
śilāhṛdayapīnāpi svākāśe viśadaiva cit 79

79. cit ekatvāt prasaṅgaḥ syāt kaḥ tatra itaravibhramaḥ
śilāhṛdayapīnā api sva-ākāśe viśadā eva cit

79. cit ekatvāt tatra kaḥ itaravibhramaḥ prasaṅgaḥ
syāt cit śilāhṛdayapīnā api svākāśe viśadā eva

79. If consciousness is one, what scope can there be for any illusion of duality (itaravibhrama)? Even when seemingly dense or 'hard-hearted,' consciousness is always pure and clear in its own fundamental nature.

Words meanings summery:

• चित् (cit) - consciousness, intelligence, thought

• एकत्वात् (ekatvāt) - due to oneness, from unity

• प्रसङ्गः (prasaṅgaḥ) - scope or possibility for something to occur (occasion, connection, consequence, implication, relevance)

• स्यात् (syāt) - would be, should be, may be

• कः (kaḥ) - what, who

• तत्र (tatra) - there, in that case, then

• इतरविभ्रमः (itaravibhramaḥ) - illusion of duality or distinction from the non-dual consciousness (illusion of difference, error concerning another)

• शिलाहृदयपीना (śilāhṛdayapīnā) - even though seemingly obscured or made dense (like a heart of stone) (thick/dense like a stone-heart, hard-hearted)

• अपि (api) - even, although, also

• स्व-आकाशे (sva-ākāśe) - in its own essential or fundamental nature (in its own space/ether, in its own nature)

• विशदा (viśadā) - clear, pure, bright, distinct

• एव (eva) - indeed, only, just

• चित् (cit) - consciousness, intelligence, thought

Words meanings and morphology

चित् (cit) - consciousness, intelligence, thought

(noun)

Nominative, feminine, singular of cit

cit - consciousness, intelligence, spirit, thought

From root 'cit' (to perceive, know, understand)

Root: cit (class 1)

एकत्वात् (ekatvāt) - due to oneness, from unity

(noun)

Ablative, neuter, singular of ekatva

ekatva - oneness, unity, singularity

From 'eka' (one) + suffix '-tva' (abstract noun)

प्रसङ्गः (prasaṅgaḥ) - scope or possibility for something to occur (occasion, connection, consequence, implication, relevance)

(noun)

Nominative, masculine, singular of prasaṅga

prasaṅga - connection, adherence, occasion, consequence, context, topic

From 'pra' + root 'sañj' (to cling, attach)

Prefix: pra

Root: sañj (class 1)

स्यात् (syāt) - would be, should be, may be

(verb)

3rd person , singular, active, optative (vidhi-liṅ) of as

Root: as (class 2)

कः (kaḥ) - what, who

(pronoun)

Nominative, masculine, singular of ka

ka - who, what, which (interrogative pronoun)

तत्र (tatra) - there, in that case, then

(indeclinable)

From 'tad' (that) + 'tra' (suffix for location)

इतरविभ्रमः (itaravibhramaḥ) - illusion of duality or distinction from the non-dual consciousness (illusion of difference, error concerning another)

(noun)

Nominative, masculine, singular of itaravibhrama

itaravibhrama - illusion of difference, delusion regarding another

Tatpurusha compound of 'itara' (other, different) and 'vibhrama' (error, illusion, confusion)

Compound type : tatpurusha (itara+vibhrama)

• itara – other, different, another
  adjective (masculine)
• vibhrama – error, illusion, delusion, confusion, mistake
  noun (masculine)
  From 'vi' + root 'bhram' (to wander, to err)
  Prefix: vi
  Root: bhram (class 1)

शिलाहृदयपीना (śilāhṛdayapīnā) - even though seemingly obscured or made dense (like a heart of stone) (thick/dense like a stone-heart, hard-hearted)

(adjective)

Nominative, feminine, singular of śilāhṛdayapīnā

śilāhṛdayapīnā - dense/thick like a stone-heart; hard-hearted

Compound of 'śilā' (stone), 'hṛdaya' (heart), and 'pīnā' (thick, dense, stout). Qualifies 'cit'.

Compound type : tatpurusha (śilā+hṛdaya+pīna)

• śilā – stone, rock
  noun (feminine)
• hṛdaya – heart, mind, core, essence
  noun (neuter)
• pīna – thick, fat, stout, dense
  adjective (feminine)

अपि (api) - even, although, also

(indeclinable)

स्व-आकाशे (sva-ākāśe) - in its own essential or fundamental nature (in its own space/ether, in its own nature)

(noun)

Locative, masculine, singular of svākāśa

svākāśa - own space, own ether, own nature

Compound of 'sva' (own, one's self) and 'ākāśa' (space, ether, subtle element)

Compound type : tatpurusha (sva+ākāśa)

• sva – own, one's own, self
  pronoun (masculine)
• ākāśa – space, ether, sky, the fifth element
  noun (masculine)
  From 'ā' + root 'kāś' (to shine, appear)
  Prefix: ā
  Root: kāś (class 1)

विशदा (viśadā) - clear, pure, bright, distinct

(adjective)

Nominative, feminine, singular of viśada

viśada - clear, pure, bright, distinct, white

From 'vi' + root 'śad' (to fall, to clarify)

Prefix: vi

Root: śad (class 1)

एव (eva) - indeed, only, just

(indeclinable)

चित् (cit) - consciousness, intelligence, thought

(noun)

Nominative, feminine, singular of cit

cit - consciousness, intelligence, spirit, thought

From root 'cit' (to perceive, know, understand)

Root: cit (class 1)

Note: Repetition of the subject for emphasis.