योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-81, verse-98

हुताशो नाशमागत्य सोमो भवति वै तथा ।
दिवसो नाशमागत्य रात्रिर्भवति वै यथा ॥ ९८ ॥

hutāśo nāśamāgatya somo bhavati vai tathā ,
divaso nāśamāgatya rātrirbhavati vai yathā 98

98. hutāśaḥ nāśam āgatya somaḥ bhavati vai tathā
divasaḥ nāśam āgatya rātriḥ bhavati vai yathā

98. hutāśaḥ nāśam āgatya somaḥ bhavati vai tathā
divasaḥ nāśam āgatya rātriḥ bhavati vai yathā

98. Indeed, when fire meets destruction, it becomes the moon, just as when day meets destruction, it becomes night.

Words meanings summery:

• हुताशः (hutāśaḥ) - fire

• नाशम् (nāśam) - destruction, ruin

• आगत्य (āgatya) - having undergone (destruction) (having come, having attained, having reached)

• सोमः (somaḥ) - the moon (the moon; Soma (deity/plant))

• भवति (bhavati) - becomes, is, exists

• वै (vai) - indeed, certainly, surely (an emphatic particle)

• तथा (tathā) - similarly, thus, so, in that manner

• दिवसः (divasaḥ) - day

• नाशम् (nāśam) - destruction, ruin

• आगत्य (āgatya) - having undergone (destruction) (having come, having attained, having reached)

• रात्रिः (rātriḥ) - night

• भवति (bhavati) - becomes, is, exists

• वै (vai) - indeed, certainly, surely (an emphatic particle)

• यथा (yathā) - just as, as, according to

Words meanings and morphology

हुताशः (hutāśaḥ) - fire

(noun)

Nominative, masculine, singular of hutāśa

hutāśa - fire, eater of oblations

Shortened form of hutāśana. Compound of huta (offered) + aśa (eater, eating).

Compound type : bahuvrīhi (huta+aśa)

• huta – offered, sacrificed, cast into fire
  adjective
  Past Passive Participle
  From root hu (to offer, sacrifice)
  Root: hu (class 3)
• aśa – eater, eating, food
  noun (masculine)
  From root aś (to eat) + suffix -a
  Root: aś (class 9)

नाशम् (nāśam) - destruction, ruin

(noun)

Accusative, masculine, singular of nāśa

nāśa - destruction, annihilation, loss, disappearance

From root naś- (to perish, be lost).

Root: naś (class 4)

Note: object of āgatya

आगत्य (āgatya) - having undergone (destruction) (having come, having attained, having reached)

(indeclinable)

Absolutive (gerund)

Formed from prefix ā- + root gam (to go) + suffix -tya.

Prefix: ā

Root: gam (class 1)

सोमः (somaḥ) - the moon (the moon; Soma (deity/plant))

(noun)

Nominative, masculine, singular of soma

soma - the moon; the Soma plant; the juice of the Soma plant; the Soma sacrifice; a deity

Root: su (class 5)

भवति (bhavati) - becomes, is, exists

(verb)

3rd person , singular, active, present (laṭ) of bhū

Present indicative, thematic conjugation (bhū + a + ti)

Root: bhū (class 1)

वै (vai) - indeed, certainly, surely (an emphatic particle)

(indeclinable)

तथा (tathā) - similarly, thus, so, in that manner

(indeclinable)

Correlative adverb from tad (that).

दिवसः (divasaḥ) - day

(noun)

Nominative, masculine, singular of divasa

divasa - day, daytime

Root: div (class 1)

नाशम् (nāśam) - destruction, ruin

(noun)

Accusative, masculine, singular of nāśa

nāśa - destruction, annihilation, loss, disappearance

From root naś- (to perish, be lost).

Root: naś (class 4)

Note: object of āgatya

आगत्य (āgatya) - having undergone (destruction) (having come, having attained, having reached)

(indeclinable)

Absolutive (gerund)

Formed from prefix ā- + root gam (to go) + suffix -tya.

Prefix: ā

Root: gam (class 1)

रात्रिः (rātriḥ) - night

(noun)

Nominative, feminine, singular of rātri

rātri - night

i-stem feminine noun.

Root: rā (class 2)

भवति (bhavati) - becomes, is, exists

(verb)

3rd person , singular, active, present (laṭ) of bhū

Present indicative, thematic conjugation (bhū + a + ti)

Root: bhū (class 1)

वै (vai) - indeed, certainly, surely (an emphatic particle)

(indeclinable)

यथा (yathā) - just as, as, according to

(indeclinable)

Correlative adverb for tad/tathā.