योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-77, verse-39

वर्षशाम्यद्हुताशोत्थभस्मामोदपतत्सुरम् ।
भूतपूर्वजगद्भूतं परिविस्मृतसर्गकम् ॥ ३९ ॥

varṣaśāmyadhutāśotthabhasmāmodapatatsuram ,
bhūtapūrvajagadbhūtaṃ parivismṛtasargakam 39

39. varṣaśāmyaddhutāśotthabasmāmodapatatsuram
bhūtapūrvajagaddbhūtam parivismṛtasargakam

39. varṣaśāmyaddhutāśotthabasmāmodapatatsuram
bhūtapūrvajagaddbhūtam parivismṛtasargakam

39. That (reality) where gods are falling due to the fragrance of ash, arising from a fire that has subsided for ages; it is the former world-entity, where creation is now completely forgotten.

Words meanings summery:

• वर्षशाम्यद्धुताशोत्थबस्मामोदपतत्सुरम् (varṣaśāmyaddhutāśotthabasmāmodapatatsuram) - Describing a cosmic reality where the grandest cycles of dissolution have taken place, leading to the decline of even divine beings. (where gods are falling due to the fragrance of ash, arising from a fire that has subsided for years/ages)

• भूतपूर्वजगद्द्भूतम् (bhūtapūrvajagaddbhūtam) - Describing a cosmic reality as the essence of a world that once existed but has now dissolved. (the formerly existing world-entity)

• परिविस्मृतसर्गकम् (parivismṛtasargakam) - Describing a cosmic reality as so ancient or profound that the very act of its creation has been lost to memory or is irrelevant. (whose creation is completely forgotten)

Words meanings and morphology

वर्षशाम्यद्धुताशोत्थबस्मामोदपतत्सुरम् (varṣaśāmyaddhutāśotthabasmāmodapatatsuram) - Describing a cosmic reality where the grandest cycles of dissolution have taken place, leading to the decline of even divine beings. (where gods are falling due to the fragrance of ash, arising from a fire that has subsided for years/ages)

(adjective)

Accusative, neuter, singular of varṣaśāmyaddhutāśotthabasmāmodapatatsura

varṣaśāmyaddhutāśotthabasmāmodapatatsura - having falling gods due to the fragrance of ash arisen from a fire subsiding for years

Compound type : bahuvrīhi (varṣa+śāmyat+hutāśa+uttha+bhasma+āmoda+patat+sura)

• varṣa – year
  noun (neuter)
• śāmyat – subsiding, ceasing, calming down
  adjective (masculine)
  Present Active Participle
  Derived from root 'śam' (to be calm, cease) with suffix -at.
  Root: śam (class 4)
• hutāśa – fire, Agni
  noun (masculine)
• uttha – arisen from, produced by
  adjective (masculine)
  Derived from 'ud-sthā' (to rise up).
  Prefix: ud
  Root: sthā (class 1)
• bhasma – ash, cinders
  noun (neuter)
• āmoda – fragrance, perfume, delight
  noun (masculine)
  Prefix: ā
• patat – falling, flying
  adjective (masculine)
  Present Active Participle
  Derived from root 'pat' (to fall) with suffix -at.
  Root: pat (class 1)
• sura – god, deity
  noun (masculine)

Note: The whole compound acts as an adjective modifying an implied neuter noun.

भूतपूर्वजगद्द्भूतम् (bhūtapūrvajagaddbhūtam) - Describing a cosmic reality as the essence of a world that once existed but has now dissolved. (the formerly existing world-entity)

(adjective)

Accusative, neuter, singular of bhūtapūrvajagaddbhūta

bhūtapūrvajagaddbhūta - that which is the formerly existing world-entity

Compound type : tatpuruṣa (bhūtapūrva+jagat+bhūta)

• bhūtapūrva – formerly existing, past
  adjective (masculine)
  Compound of past participle and adjective.
  Root: bhū (class 1)
• jagat – world, universe, that which moves
  noun (neuter)
  Root: gam (class 1)
• bhūta – being, creature, element, what has come into existence
  noun (neuter)
  Past Passive Participle
  Derived from root 'bhū' (to be, become).
  Root: bhū (class 1)

Note: The whole compound acts as an adjective modifying an implied neuter noun.

परिविस्मृतसर्गकम् (parivismṛtasargakam) - Describing a cosmic reality as so ancient or profound that the very act of its creation has been lost to memory or is irrelevant. (whose creation is completely forgotten)

(adjective)

Accusative, neuter, singular of parivismṛtasargaka

parivismṛtasargaka - whose creation is entirely forgotten

Compound type : bahuvrīhi (parivismṛta+sargaka)

• parivismṛta – completely forgotten, totally unremembered
  adjective (masculine)
  Past Passive Participle
  Derived from 'pari-vi-smṛ' (to forget completely).
  Prefixes: pari+vi
  Root: smṛ (class 1)
• sargaka – creation, emanation, production (often implies 'having creation')
  noun (masculine)
  Derived from root 'sṛj' (to create) with suffix -aka.
  Root: sṛj (class 6)

Note: The whole compound acts as an adjective modifying an implied neuter noun.