योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-31, verse-51

संवित्तिस्फारता चित्तं मनस्तत्प्राणकोटरे ।
सर्वत्र विद्यते संविद्व्योमस्वच्छा जडाजडे ॥ ५१ ॥

saṃvittisphāratā cittaṃ manastatprāṇakoṭare ,
sarvatra vidyate saṃvidvyomasvacchā jaḍājaḍe 51

51. saṃvitti-sphāratā cittam manas tat-prāṇa-koṭare
sarvatra vidyate saṃvit vyoma-svacchā jaḍā-jaḍe

51. saṃvitti-sphāratā (eva) cittam (ca) manas (bhavati).
tat-prāṇa-koṭare (ca sthitam).
vyoma-svacchā saṃvit sarvatra jaḍā-jaḍe vidyate.

51. The expansive nature of sensation (saṃvitti-sphāratā) constitutes the mind (citta) and the mental faculty (manas), which resides within the core of that vital energy (prāṇa). This pure consciousness (saṃvit), clear like space, exists everywhere, pervading both the inert and the sentient.

Words meanings summery:

• संवित्ति-स्फारता (saṁvitti-sphāratā) - the expansive nature of sensation (expansion of consciousness/sensation)

• चित्तम् (cittam) - mind (citta) (mind, consciousness, thought)

• मनस् (manas) - mental faculty (manas) (mind, intellect, mental faculty)

• तत्-प्राण-कोटरे (tat-prāṇa-koṭare) - in the core of that vital energy (prāṇa) (in the cavity of that prāṇa)

• सर्वत्र (sarvatra) - everywhere (everywhere, in all places)

• विद्यते (vidyate) - exists, is present (is, exists, is present)

• संवित् (saṁvit) - pure consciousness (saṃvit) (consciousness, awareness, knowledge)

• व्योम-स्वच्छा (vyoma-svacchā) - clear like space (clear/pure like space/ether)

• जडा-जडे (jaḍā-jaḍe) - in both the inert and the sentient (in the inert and the non-inert (sentient))

Words meanings and morphology

संवित्ति-स्फारता (saṁvitti-sphāratā) - the expansive nature of sensation (expansion of consciousness/sensation)

(noun)

Nominative, feminine, singular of saṃvitti-sphāratā

saṁvitti-sphāratā - expansion of sensation/consciousness

compound of saṃvitti (sensation/consciousness) and sphāratā (expansion)

Compound type : tatpurusha (saṃvitti+sphāratā)

• saṃvitti – sensation, consciousness, knowledge
  noun (feminine)
  from root vid with prefix sam
  Prefix: sam
  Root: vid (class 2)
• sphāratā – expansion, spread, manifestation
  noun (feminine)
  from sphāra (expanded) + -tā (suffix)
  Root: sphṛ

चित्तम् (cittam) - mind (citta) (mind, consciousness, thought)

(noun)

Nominative, neuter, singular of citta

citta - mind, consciousness, thought, attention

from root cit (to perceive, to understand)

Root: cit (class 1)

मनस् (manas) - mental faculty (manas) (mind, intellect, mental faculty)

(noun)

Nominative, neuter, singular of manas

manas - mind, intellect, mental faculty

from root man (to think)

Root: man (class 4)

तत्-प्राण-कोटरे (tat-prāṇa-koṭare) - in the core of that vital energy (prāṇa) (in the cavity of that prāṇa)

(noun)

Locative, neuter, singular of tat-prāṇa-koṭara

tat-prāṇa-koṭara - cavity/core of that prāṇa

compound of tad (that), prāṇa (vital energy), and koṭara (cavity)

Compound type : tatpurusha (tad+prāṇa+koṭara)

• tad – that
  pronoun (neuter)
• prāṇa – vital air, life-force, vital energy
  noun (masculine)
  Prefix: pra
  Root: an (class 2)
• koṭara – cavity, hollow, interior, core
  noun (neuter)

सर्वत्र (sarvatra) - everywhere (everywhere, in all places)

(indeclinable)

from sarva (all) + -tra

विद्यते (vidyate) - exists, is present (is, exists, is present)

(verb)

3rd person , singular, middle, present (laṭ) of vid

present middle indicative

3rd person singular, present tense, middle voice (ātmanepada)

Root: vid (class 2)

संवित् (saṁvit) - pure consciousness (saṃvit) (consciousness, awareness, knowledge)

(noun)

Nominative, feminine, singular of saṃvit

saṁvit - consciousness, awareness, knowledge

from root vid (to know) with prefix sam

Prefix: sam

Root: vid (class 2)

व्योम-स्वच्छा (vyoma-svacchā) - clear like space (clear/pure like space/ether)

(adjective)

Nominative, feminine, singular of vyoma-svaccha

vyoma-svaccha - clear like space/ether

compound of vyoman (space/ether) and svaccha (clear/pure)

Compound type : upapada-tatpurusha (or simile) (vyoman+svaccha)

• vyoman – sky, space, ether
  noun (neuter)
• svaccha – clear, pure, transparent
  adjective (masculine)
  from su (good) + accha (clear)

जडा-जडे (jaḍā-jaḍe) - in both the inert and the sentient (in the inert and the non-inert (sentient))

(noun)

Locative, neuter, dual of jaḍā-jaḍa

jaḍā-jaḍa - inert and non-inert

dvandva compound of jaḍa (inert) and ajaḍa (non-inert/sentient)

Compound type : dvandva (jaḍa+ajaḍa)

• jaḍa – inert, unconscious, dull, foolish
  adjective (masculine)
  Root: jaḍ
• ajaḍa – non-inert, sentient, conscious, intelligent
  adjective (masculine)
  negation of jaḍa with 'a'
  Prefix: a
  Root: jaḍ

Note: refers to both categories of existence