योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-43, verse-27

हृद्गुहावासिचित्तत्त्वं मुख्यं सानातनं वपुः ।
शङ्खचक्रगदाहस्तो गौण आकार आत्मनः ॥ २७ ॥

hṛdguhāvāsicittattvaṃ mukhyaṃ sānātanaṃ vapuḥ ,
śaṅkhacakragadāhasto gauṇa ākāra ātmanaḥ 27

27. hṛd-guhā-vāsi-cittatvam mukhyam sānātanam vapuḥ
śaṅkha-cakra-gadā-hastaḥ gauṇaḥ ākāraḥ ātmanaḥ

27. hṛd-guhā-vāsi-cittatvam mukhyam sānātanam vapuḥ
śaṅkha-cakra-gadā-hastaḥ gauṇaḥ ātmanaḥ ākāraḥ

27. The consciousness principle dwelling in the cave of the heart is the principal and eternal form. The form with a conch, discus, and mace in hand is a secondary manifestation of the self (ātman).

Words meanings summery:

• हृद्-गुहा-वासि-चित्तत्वम् (hṛd-guhā-vāsi-cittatvam) - the principle of consciousness dwelling in the cave of the heart

• मुख्यम् (mukhyam) - principal, chief, primary

• सानातनम् (sānātanam) - eternal, ancient, everlasting

• वपुः (vapuḥ) - body, form, shape, nature

• शङ्ख-चक्र-गदा-हस्तः (śaṅkha-cakra-gadā-hastaḥ) - having conch, discus, and mace in hand

• गौणः (gauṇaḥ) - secondary, subordinate, derivative

• आकारः (ākāraḥ) - form, shape, appearance, manifestation

• आत्मनः (ātmanaḥ) - of the self, of the soul

Words meanings and morphology

हृद्-गुहा-वासि-चित्तत्वम् (hṛd-guhā-vāsi-cittatvam) - the principle of consciousness dwelling in the cave of the heart

(noun)

Nominative, neuter, singular of hṛd-guhā-vāsi-cittatva

hṛd-guhā-vāsi-cittatva - consciousness principle residing in the heart-cave

Compound type : Tatpurusha (hṛd+guhā+vāsin+cittatva)

• hṛd – heart, mind
  noun (neuter)
• guhā – cave, hiding place
  noun (feminine)
  Root: guh (class 1)
• vāsin – dwelling, residing, inhabiting
  adjective (masculine)
  Agent Noun (adjectival)
  Derived from root vas (to dwell) with suffix -in
  Root: vas (class 1)
• cittatva – nature of consciousness, principle of thought/mind
  noun (neuter)
  Derived from citta (mind, thought) with suffix -tva (abstract noun)
  Root: cit (class 1)

Note: Subject of implied 'is'.

मुख्यम् (mukhyam) - principal, chief, primary

(adjective)

Nominative, neuter, singular of mukhya

mukhya - principal, chief, primary, main

Derived from mukha (face, chief part).

Note: Predicate adjective.

सानातनम् (sānātanam) - eternal, ancient, everlasting

(adjective)

Nominative, neuter, singular of sānātana

sānātana - eternal, primeval, everlasting (often a variant of sanātana)

Likely a variant form or emphatic sa + nātana (though nātana alone is rare), or simply sanātana with elongated initial vowel.

Note: Predicate adjective.

वपुः (vapuḥ) - body, form, shape, nature

(noun)

Nominative, neuter, singular of vapus

vapus - body, form, figure, nature

s-stem noun.

Root: vap (class 1)

शङ्ख-चक्र-गदा-हस्तः (śaṅkha-cakra-gadā-hastaḥ) - having conch, discus, and mace in hand

(adjective)

Nominative, masculine, singular of śaṅkha-cakra-gadā-hasta

śaṅkha-cakra-gadā-hasta - having a conch, discus, and mace in hand (epithet of Viṣṇu)

Compound type : Bahuvrīhi (śaṅkha+cakra+gadā+hasta)

• śaṅkha – conch, conch-shell
  noun (masculine)
• cakra – discus, wheel
  noun (neuter)
  Root: kṛ (class 8)
• gadā – mace, club
  noun (feminine)
• hasta – hand
  noun (masculine)

Note: Refers to ākāraḥ.

गौणः (gauṇaḥ) - secondary, subordinate, derivative

(adjective)

Nominative, masculine, singular of gauṇa

gauṇa - secondary, subordinate, minor, accessory

From guṇa (quality, attribute).

Note: Predicate adjective.

आकारः (ākāraḥ) - form, shape, appearance, manifestation

(noun)

Nominative, masculine, singular of ākāra

ākāra - form, shape, appearance, aspect

From ā-kṛ (to fashion, to form).

Prefix: ā

Root: kṛ (class 8)

आत्मनः (ātmanaḥ) - of the self, of the soul

(noun)

Genitive, masculine, singular of ātman

ātman - self, soul, spirit, essence

n-stem noun.

Root: an (class 2)

Note: Possessive, 'of the self'.