योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-18, verse-24

इत्यष्टैश्वर्ययुक्तास्ता मातरो रौद्रचेष्टिताः ।
कदाचिन्मिलिता व्योम्नि सर्वाः केनापि हेतुना ॥ २४ ॥

ityaṣṭaiśvaryayuktāstā mātaro raudraceṣṭitāḥ ,
kadācinmilitā vyomni sarvāḥ kenāpi hetunā 24

24. iti aṣṭaiśvaryayuktāḥ tāḥ mātaraḥ raudraceṣṭitāḥ
kadācit militāḥ vyomni sarvāḥ kena api hetunā

24. iti aṣṭaiśvaryayuktāḥ raudraceṣṭitāḥ tāḥ sarvāḥ
mātaraḥ kadācit kenāpi hetunā vyomni militāḥ

24. Thus, all those Mothers (mātaraḥ), endowed with the eight divine powers and performing fierce actions, once gathered in the sky for some reason.

Words meanings summery:

• इति (iti) - thus (thus, so, in this manner, as follows)

• अष्टैश्वर्ययुक्ताः (aṣṭaiśvaryayuktāḥ) - endowed with the eight divine powers (endowed with eight perfections/powers, possessing eight lordly attributes)

• ताः (tāḥ) - those (Mothers) (those)

• मातरः (mātaraḥ) - the divine Mothers (mātaraḥ) (mothers, divine Mothers)

• रौद्रचेष्टिताः (raudraceṣṭitāḥ) - performing fierce actions (having fierce actions/deeds, behaving fiercely)

• कदाचित् (kadācit) - once (once, sometimes, at some time)

• मिलिताः (militāḥ) - met (met, gathered, united)

• व्योम्नि (vyomni) - in the sky (in the sky, in space)

• सर्वाः (sarvāḥ) - all (of them) (all, every)

• केन (kena) - by some (by what, by whom, by some)

• अपि (api) - (forms indefinite pronoun 'some') (also, even, and, though, (interrogative particle), (forms indefinite pronoun))

• हेतुना (hetunā) - for some reason (by reason, by cause, for a reason)

Words meanings and morphology

इति (iti) - thus (thus, so, in this manner, as follows)

(indeclinable)

अष्टैश्वर्ययुक्ताः (aṣṭaiśvaryayuktāḥ) - endowed with the eight divine powers (endowed with eight perfections/powers, possessing eight lordly attributes)

(compound adjective)

Compound type : Bahuvrīhi (aṣṭan+aiśvarya+yukta)

• aṣṭan – eight
  numeral adjective
• aiśvarya – power, dominion, wealth, supremacy, prosperity, divine power, perfection
  noun (neuter)
  Derived from īśvara (lord) + ya (taddhita suffix)
• yukta – joined, yoked, endowed with, possessed of, connected, engaged, suitable
  participle adjective (masculine)
  Past Passive Participle
  Derived from root yuj (to join) with suffix -kta
  Root: yuj (class 7)

Note: Refers to 'mātaraḥ'.

ताः (tāḥ) - those (Mothers) (those)

(demonstrative pronoun)

Note: Agrees with 'mātaraḥ'.

मातरः (mātaraḥ) - the divine Mothers (mātaraḥ) (mothers, divine Mothers)

(noun)

Nominative, feminine, plural of mātṛ

mātṛ - mother

Note: Subject of the sentence.

रौद्रचेष्टिताः (raudraceṣṭitāḥ) - performing fierce actions (having fierce actions/deeds, behaving fiercely)

(compound adjective)

Compound type : Bahuvrīhi (raudra+ceṣṭita)

• raudra – fierce, terrible, belonging to Rudra
  adjective (masculine)
  Root: rud (class 2)
• ceṣṭita – action, deed, movement
  noun (neuter)
  Past Passive Participle
  Derived from root ceṣṭ (to move, act) with suffix -kta, used here as a noun
  Root: ceṣṭ (class 1)

Note: Agrees with 'mātaraḥ'.

कदाचित् (kadācit) - once (once, sometimes, at some time)

(indeclinable)

Note: Adverb of time.

मिलिताः (militāḥ) - met (met, gathered, united)

(participle adjective)

Note: Acts as the main verb, agreeing with 'mātaraḥ'.

व्योम्नि (vyomni) - in the sky (in the sky, in space)

(noun)

Locative, neuter, singular of vyoman

vyoman - sky, atmosphere, space

Note: Location of meeting.

सर्वाः (sarvāḥ) - all (of them) (all, every)

(pronoun adjective)

Note: Agrees with 'mātaraḥ'.

केन (kena) - by some (by what, by whom, by some)

(interrogative pronoun)

Note: Part of indefinite pronoun 'kenāpi' (by some).

अपि (api) - (forms indefinite pronoun 'some') (also, even, and, though, (interrogative particle), (forms indefinite pronoun))

(indeclinable)

Note: Forms an indefinite pronoun with 'kena'.

हेतुना (hetunā) - for some reason (by reason, by cause, for a reason)

(noun)

Instrumental, masculine, singular of hetu

hetu - cause, reason, motive, means

Root: hi (class 5)

Note: Explains the reason for their meeting.