योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-80, verse-38

आब्रह्मलोकपातालं शान्तं शून्यमथाभवत् ।
रजोधूमानिलाम्भोधिभूतमुक्तं समं नभः ॥ ३८ ॥

ābrahmalokapātālaṃ śāntaṃ śūnyamathābhavat ,
rajodhūmānilāmbhodhibhūtamuktaṃ samaṃ nabhaḥ 38

38. ābrahmalokapātālam śāntam śūnyam atha abhavat
rajodhūmanilāmbhodhibhūtamuktam samam nabhaḥ

38. atha nabhaḥ ābrahmalokapātālam śāntam śūnyam
rajodhūmanilāmbhodhibhūtamuktam samam abhavat

38. Then, from the highest realm (Brahmaloka) down to the lowest netherworld (Patala), the sky became tranquil, empty, and uniform, freed from dust, smoke, wind, oceans, and all beings.

Words meanings summery:

• आब्रह्मलोकपातालम् (ābrahmalokapātālam) - from Brahmaloka to Patala; encompassing all realms from Brahma's world to the netherworld

• शान्तम् (śāntam) - calm, tranquil, peaceful, pacified

• शून्यम् (śūnyam) - empty, void, vacant, devoid

• अथ (atha) - then, next, now, moreover

• अभवत् (abhavat) - it became, it was

• रजोधूमनिलाम्भोधिभूतमुक्तम् (rajodhūmanilāmbhodhibhūtamuktam) - freed from dust, smoke, wind, oceans, and living beings/elements

• समम् (samam) - even, level, uniform, equal, tranquil

• नभः (nabhaḥ) - sky, atmosphere, space, ether

Words meanings and morphology

आब्रह्मलोकपातालम् (ābrahmalokapātālam) - from Brahmaloka to Patala; encompassing all realms from Brahma's world to the netherworld

(noun)

Nominative, neuter, singular of ābrahmalokapātāla

ābrahmalokapātāla - from Brahmaloka to Patala; encompassing all realms from Brahma's world to the netherworld

Compound type : avyayībhāva (ā+brahmaloka+pātāla)

• ā – up to, including, until
  indeclinable
• brahmaloka – the world of Brahma, the highest heavenly realm
  noun (masculine)
• pātāla – the netherworld, one of the seven subterranean regions
  noun (neuter)

Note: Functions as an adjective or adverbial phrase indicating spatial extent, agreeing with the state of the sky.

शान्तम् (śāntam) - calm, tranquil, peaceful, pacified

(adjective)

Nominative, neuter, singular of śānta

śānta - calm, tranquil, peaceful, pacified, extinguished

Past Passive Participle

Derived from root √śam (to be quiet, calm)

Root: śam (class 4)

Note: Agrees with 'nabhaḥ'.

शून्यम् (śūnyam) - empty, void, vacant, devoid

(adjective)

Nominative, neuter, singular of śūnya

śūnya - empty, void, vacant, non-existent

Note: Agrees with 'nabhaḥ'.

अथ (atha) - then, next, now, moreover

(indeclinable)

अभवत् (abhavat) - it became, it was

(verb)

3rd person , singular, active, past imperfect (laṅ) of bhū

Imperfect (Laṅ)

3rd person singular active

Root: bhū (class 1)

रजोधूमनिलाम्भोधिभूतमुक्तम् (rajodhūmanilāmbhodhibhūtamuktam) - freed from dust, smoke, wind, oceans, and living beings/elements

(adjective)

Nominative, neuter, singular of rajodhūmanilāmbhodhibhūtamukta

rajodhūmanilāmbhodhibhūtamukta - freed from the aggregate of dust, smoke, wind, oceans, and living beings/elements

Compound type : tatpuruṣa (rajas+dhūma+anila+ambhodhi+bhūta+mukta)

• rajas – dust, dirt, pollen
  noun (neuter)
• dhūma – smoke, vapor
  noun (masculine)
• anila – wind, air
  noun (masculine)
• ambhodhi – ocean, sea, reservoir of water
  noun (masculine)
  Compound of 'ambhas' (water) + 'dhi' (holder).
• bhūta – being, creature, element; what has been or come into being
  noun (neuter/masculine)
  Past Passive Participle (used as noun)
  Derived from root √bhū (to be, become).
  Root: bhū (class 1)
• mukta – freed, released, liberated, let loose
  adjective (masculine/feminine/neuter)
  Past Passive Participle
  Derived from root √muc (to free, release).
  Root: muc (class 6)

Note: Agrees with 'nabhaḥ'.

समम् (samam) - even, level, uniform, equal, tranquil

(adjective)

Nominative, neuter, singular of sama

sama - even, level, equal, uniform, tranquil, calm

Note: Agrees with 'nabhaḥ'.

नभः (nabhaḥ) - sky, atmosphere, space, ether

(noun)

Nominative, neuter, singular of nabhas

nabhas - sky, atmosphere, space, ether, cloud