योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-47, verse-18

महाशिलाघनोऽप्येष चिद्धनस्थं शिलोदरम् ।
अरन्ध्रोनिर्द्वयोऽच्छोऽजः संशान्तःसंनिवेशवत् ॥ १८ ॥

mahāśilāghano'pyeṣa ciddhanasthaṃ śilodaram ,
arandhronirdvayo'ccho'jaḥ saṃśāntaḥsaṃniveśavat 18

18. mahā-śilā-ghanaḥ api eṣaḥ cit-ghana-stham śilā-udaram
a-randhraḥ nir-dvayaḥ acchaḥ ajaḥ saṃśāntaḥ saṃniveśa-vat

18. eṣaḥ mahā-śilā-ghanaḥ api (asti) (etasya)
śilā-udaram cit-ghana-stham (asti)
(eṣaḥ) a-randhraḥ nir-dvayaḥ acchaḥ
ajaḥ saṃśāntaḥ saṃniveśa-vat (ca asti)

18. Even this (supreme consciousness) (brahman) is a dense mass like a great stone, its interior being like stone and established in dense consciousness. It is without apertures, non-dual, pure, unborn, completely peaceful, yet it possesses an inherent order.

Words meanings summery:

• महा-शिला-घनः (mahā-śilā-ghanaḥ) - describing the supreme consciousness (brahman) as a solid, unmoving essence (dense mass like a great stone, very dense rock-like (substance))

• अपि (api) - even, also, too, despite

• एषः (eṣaḥ) - this (supreme consciousness) (brahman) (this (one))

• चित्-घन-स्थम् (cit-ghana-stham) - firmly existing within the core of pure consciousness (located in dense consciousness, established in dense consciousness)

• शिला-उदरम् (śilā-udaram) - its inner nature is firm and unyielding like a stone (stone-like interior, belly like a stone)

• अ-रन्ध्रः (a-randhraḥ) - without holes, without apertures, flawless

• निर्-द्वयः (nir-dvayaḥ) - non-dual, without duality

• अच्छः (acchaḥ) - pure, clear, transparent

• अजः (ajaḥ) - unborn, uncreated (as an attribute of Brahman) (unborn, uncreated, goat)

• संशान्तः (saṁśāntaḥ) - completely peaceful, perfectly tranquil, pacified

• संनिवेश-वत् (saṁniveśa-vat) - possessing a subtle, inherent order or potential for manifestation, despite being formless (possessing arrangement, having structure, configured, having an inherent order)

Words meanings and morphology

महा-शिला-घनः (mahā-śilā-ghanaḥ) - describing the supreme consciousness (brahman) as a solid, unmoving essence (dense mass like a great stone, very dense rock-like (substance))

(noun)

Nominative, masculine, singular of mahā-śilā-ghana

mahā-śilā-ghana - dense mass like a great stone

Compound of mahā (great) + śilā (stone) + ghana (dense mass)

Compound type : karmadharaya (mahā+śilā+ghana)

• mahā – great, large
  adjective
• śilā – stone, rock
  noun (feminine)
• ghana – dense, solid, compact mass
  noun (masculine)
  Root: han (class 2)

Note: Refers to Brahman.

अपि (api) - even, also, too, despite

(indeclinable)

एषः (eṣaḥ) - this (supreme consciousness) (brahman) (this (one))

(pronoun)

Nominative, masculine, singular of etad

etad - this, this one

demonstrative pronoun

Note: Subject of the sentence, referring to Brahman.

चित्-घन-स्थम् (cit-ghana-stham) - firmly existing within the core of pure consciousness (located in dense consciousness, established in dense consciousness)

(adjective)

Accusative, neuter, singular of cit-ghana-stha

cit-ghana-stha - located in dense consciousness

Compound of cit (consciousness) + ghana (dense) + stha (standing/located)

Compound type : tatpurusha (cit-ghana+stha)

• cit – consciousness, intelligence
  noun (feminine)
  Root: cit (class 1)
• ghana – dense, compact
  adjective (masculine)
  Root: han (class 2)
• stha – standing, situated, located
  adjective
  derived from root sthā (to stand)
  Root: sthā (class 1)

Note: Functions as a predicate nominative or adverbial accusative, describing an aspect of Brahman.

शिला-उदरम् (śilā-udaram) - its inner nature is firm and unyielding like a stone (stone-like interior, belly like a stone)

(noun)

Accusative, neuter, singular of śilā-udara

śilā-udara - stone-like interior, belly like a stone

Compound of śilā (stone) + udara (belly/interior)

Compound type : karmadharaya (śilā+udara)

• śilā – stone, rock
  noun (feminine)
• udara – belly, interior, inside
  noun (neuter)

Note: Functions as a predicate nominative or adverbial accusative, describing an aspect of Brahman.

अ-रन्ध्रः (a-randhraḥ) - without holes, without apertures, flawless

(adjective)

Nominative, masculine, singular of a-randhra

a-randhra - without holes, without apertures, flawless, complete

Negation of randhra (hole/flaw)

Compound type : nañ-bahuvrihi (na+randhra)

• na – not
  indeclinable
  negation particle
• randhra – hole, aperture, defect
  noun (neuter)
  Root: randh (class 1)

Note: Refers to Brahman.

निर्-द्वयः (nir-dvayaḥ) - non-dual, without duality

(adjective)

Nominative, masculine, singular of nir-dvaya

nir-dvaya - non-dual, without duality

Compound of nir (without) + dvaya (duality/pair)

Compound type : avyayībhāva (nir+dvaya)

• nis – out, forth, without, free from
  indeclinable
  prefix, appears as nir before vowels and soft consonants
• dvaya – pair, couple, duality
  noun (neuter)
  Root: dvi

Note: Refers to Brahman.

अच्छः (acchaḥ) - pure, clear, transparent

(adjective)

Nominative, masculine, singular of accha

accha - pure, clear, transparent, clean

Note: Refers to Brahman.

अजः (ajaḥ) - unborn, uncreated (as an attribute of Brahman) (unborn, uncreated, goat)

(adjective)

Nominative, masculine, singular of aja

aja - unborn, uncreated (adj.); goat (noun)

Negation of ja (born), from root jan (to be born)

Compound type : nañ-tatpuruṣa (na+ja)

• na – not
  indeclinable
  negation particle
• ja – born, produced from
  adjective
  derived from root jan
  Root: jan (class 4)

Note: Refers to Brahman.

संशान्तः (saṁśāntaḥ) - completely peaceful, perfectly tranquil, pacified

(adjective)

Nominative, masculine, singular of saṃśānta

saṁśānta - completely peaceful, perfectly tranquil, pacified

Past Passive Participle

Derived from root śam (to be calm) with prefix sam

Prefix: sam

Root: śam (class 4)

Note: Refers to Brahman.

संनिवेश-वत् (saṁniveśa-vat) - possessing a subtle, inherent order or potential for manifestation, despite being formless (possessing arrangement, having structure, configured, having an inherent order)

(adjective)

Nominative, masculine, singular of saṃniveśa-vat

saṁniveśa-vat - possessing arrangement, having structure, configured, having an inherent order

Derived from saṃniveśa (arrangement, structure) + -vat (possessive suffix)

Compound type : tatpurusha (saṃniveśa+vat)

• saṃniveśa – arrangement, structure, order, disposition
  noun (masculine)
  derived from root viś (to enter) with prefixes sam + ni
  Prefixes: sam+ni
  Root: viś (class 6)
• vat – possessing, like, having
  suffix
  possessive suffix

Note: Refers to Brahman.