योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-28, verse-4

कंचित्कालं समासाद्य स्वात्मोदयकरं शुभम् ।
चक्रुर्दुन्दुभिनिर्घोषं प्रलयाभ्ररवोपमम् ॥ ४ ॥

kaṃcitkālaṃ samāsādya svātmodayakaraṃ śubham ,
cakrurdundubhinirghoṣaṃ pralayābhraravopamam 4

4. kañcit kālam samāsādya svātmodayakaram śubham |
cakruḥ dundubhinirghoṣam pralayābhraravopamam || 4 ||

4. kañcit kālam samāsādya śubham svātmodayakaram
dundubhinirghoṣam pralayābhraravopamam cakruḥ 4

4. Having obtained a certain auspicious time that would cause the manifestation of their own selves (ātman), they then made a drum sound resembling the roar of doomsday clouds.

Words meanings summery:

• कञ्चित् (kañcit) - a certain, some

• कालम् (kālam) - time, period

• समासाद्य (samāsādya) - having obtained, having reached, having approached

• स्वात्मोदयकरम् (svātmodayakaram) - causing the manifestation of one's own self

• शुभम् (śubham) - auspicious, good, beautiful

• चक्रुः (cakruḥ) - they made, they did

• दुन्दुभिनिर्घोषम् (dundubhinirghoṣam) - the sound of a drum, a drum-roar

• प्रलयाभ्ररवोपमम् (pralayābhraravopamam) - resembling the roar of doomsday clouds

Words meanings and morphology

कञ्चित् (kañcit) - a certain, some

(pronoun)

Accusative, masculine, singular of kañcit

kañcit - some, a certain, any

Note: Modifies 'kālam'.

कालम् (kālam) - time, period

(noun)

Accusative, masculine, singular of kāla

kāla - time, period, season

Note: Object of 'samāsādya'.

समासाद्य (samāsādya) - having obtained, having reached, having approached

(indeclinable)

absolutive (gerund)

from prefixes 'sam' + 'ā' + root 'sad' (to sit, approach) + suffix '-ya'

Prefixes: sam+ā

Root: sad (class 1)

स्वात्मोदयकरम् (svātmodayakaram) - causing the manifestation of one's own self

(adjective)

Accusative, masculine, singular of svātmodayakara

svātmodayakara - causing the manifestation/rise of one's own self

Compound type : tatpuruṣa (sva+ātman+udayakara)

• sva – one's own, self
  pronoun (neuter)
• ātman – self, soul, individual soul, supreme soul (ātman)
  noun (masculine)
• udayakara – causing rise, causing manifestation, producing
  adjective (masculine)
  from udaya (rise, manifestation) + kara (maker, causing)

Note: Modifies 'kālam'.

शुभम् (śubham) - auspicious, good, beautiful

(adjective)

Accusative, neuter, singular of śubha

śubha - auspicious, good, beautiful, propitious

Note: Modifies 'kālam'.

चक्रुः (cakruḥ) - they made, they did

(verb)

3rd person , plural, active, past perfect (lit) of kṛ

perfect tense

root 'kṛ' (8th class), perfect active 3rd person plural

Root: kṛ (class 8)

Note: From root 'kṛ'.

दुन्दुभिनिर्घोषम् (dundubhinirghoṣam) - the sound of a drum, a drum-roar

(noun)

Accusative, masculine, singular of dundubhinirghoṣa

dundubhinirghoṣa - sound of a drum, drum-roar, loud noise

Compound type : tatpuruṣa (dundubhi+nirghoṣa)

• dundubhi – drum, kettle-drum
  noun (masculine)
• nirghoṣa – sound, roar, loud noise
  noun (masculine)
  from nir + ghuṣ (to sound)
  Prefix: nir
  Root: ghuṣ (class 1)

Note: Object of 'cakruḥ'.

प्रलयाभ्ररवोपमम् (pralayābhraravopamam) - resembling the roar of doomsday clouds

(adjective)

Accusative, masculine, singular of pralayābhraravopama

pralayābhraravopama - resembling the roar of doomsday clouds

Compound type : tatpuruṣa (pralaya+abhra+rava+upama)

• pralaya – dissolution, destruction, cosmic dissolution
  noun (masculine)
  from pra + lī (to dissolve)
  Prefix: pra
  Root: lī (class 4)
• abhra – cloud, sky
  noun (neuter)
• rava – roar, sound, cry
  noun (masculine)
  from root 'ru' (to cry, roar)
  Root: ru (class 2)
• upama – resembling, comparable, similar
  adjective (masculine)

Note: Modifies 'dundubhinirghoṣam'.