योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-54, verse-10

तच्चिद्रूपतया तेजःकणोऽहमिति चेतति ।
स्वप्ने संविद्यथा हि त्वमाकाशगमनादि च ॥ १० ॥

taccidrūpatayā tejaḥkaṇo'hamiti cetati ,
svapne saṃvidyathā hi tvamākāśagamanādi ca 10

10. tat cit-rūpatayā tejaḥ-kaṇaḥ aham iti cetati
svapne saṃvit yathā hi tvam ākāśa-gamanā-ādi ca

10. tat cit-rūpatayā aham tejaḥ-kaṇaḥ iti cetati.
yathā hi svapne tvam ākāśa-gamanā-ādi ca saṃvit (anubhavati).

10. That consciousness, by virtue of its nature as pure consciousness (cit), perceives itself saying, "I am a particle of light (tejas-kaṇa)." Just as in a dream, one's consciousness (saṃvit) indeed experiences things like flying in the sky.

Words meanings summery:

• तत् (tat) - that (consciousness or Self) (that)

• चित्-रूपतया (cit-rūpatayā) - by the nature of consciousness, by its conscious form

• तेजः-कणः (tejaḥ-kaṇaḥ) - a particle of light, a spark of energy

• अहम् (aham) - I

• इति (iti) - (marks direct speech or thought) (thus, in this way)

• चेतति (cetati) - perceives, thinks, understands

• स्वप्ने (svapne) - in a dream

• संवित् (saṁvit) - consciousness, knowledge, understanding

• यथा (yathā) - just as, as, in the manner that

• हि (hi) - indeed, surely, because

• त्वम् (tvam) - the individual consciousness (you)

• आकाश-गमना-आदि (ākāśa-gamanā-ādi) - experiences such as traversing the sky in a dream (flying in the sky and so on)

• च (ca) - and

Words meanings and morphology

तत् (tat) - that (consciousness or Self) (that)

(pronoun)

Nominative, neuter, singular of tad

tad - that, that one, such

Note: Refers to the ultimate consciousness or Self.

चित्-रूपतया (cit-rūpatayā) - by the nature of consciousness, by its conscious form

(noun)

Instrumental, feminine, singular of cit-rūpatā

cit-rūpatā - the state or nature of consciousness; the form of pure intelligence

Compound type : tatpurusha (cit+rūpatā)

• cit – consciousness, pure intelligence, understanding
  noun (feminine)
• rūpatā – nature, form, state of being
  noun (feminine)
  From rūpa + tā (suffix for abstract noun)

तेजः-कणः (tejaḥ-kaṇaḥ) - a particle of light, a spark of energy

(noun)

Nominative, masculine, singular of tejaḥ-kaṇa

tejaḥ-kaṇa - a particle of light, a spark of energy

Compound type : tatpurusha (tejas+kaṇa)

• tejas – light, energy, splendor, vital essence
  noun (neuter)
• kaṇa – a particle, a grain, a drop
  noun (masculine)

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I, me, my

इति (iti) - (marks direct speech or thought) (thus, in this way)

(indeclinable)

चेतति (cetati) - perceives, thinks, understands

(verb)

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

Root: cit (class 1)

Note: The subject is 'tat' (that consciousness).

स्वप्ने (svapne) - in a dream

(noun)

Locative, masculine, singular of svapna

svapna - sleep, dream, a dream state

संवित् (saṁvit) - consciousness, knowledge, understanding

(noun)

Nominative, feminine, singular of saṃvid

saṁvid - consciousness, knowledge, understanding, intelligence

Derived from sam- + vid (to know)

Prefix: sam

Root: vid (class 2)

यथा (yathā) - just as, as, in the manner that

(indeclinable)

हि (hi) - indeed, surely, because

(indeclinable)

Note: Emphatic particle.

त्वम् (tvam) - the individual consciousness (you)

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you (singular)

आकाश-गमना-आदि (ākāśa-gamanā-ādi) - experiences such as traversing the sky in a dream (flying in the sky and so on)

(noun)

Nominative, neuter, singular of ākāśa-gamanā-ādi

ākāśa-gamanā-ādi - flying in the sky and other similar things

Compound type : tatpurusha (ākāśa-gamana+ādi)

• ākāśa – sky, space, ether
  noun (masculine)
• gamana – going, moving, motion, flying
  noun (neuter)
  Derived from root gam (to go)
  Root: gam (class 1)
• ādi – and so on, beginning, etc.
  indeclinable

Note: It functions as the object of an implied verb like 'experiences'.

च (ca) - and

(indeclinable)