योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-200, verse-16

शनैर्दुन्दुभिसिद्धौघवाक्यपुष्पभरः समम् ।
प्रययौ रोदसीरन्ध्रे वेलाचलमिवाम्बुधौ ॥ १६ ॥

śanairdundubhisiddhaughavākyapuṣpabharaḥ samam ,
prayayau rodasīrandhre velācalamivāmbudhau 16

16. dundubhisiddhaughavākyapuṣpabharaḥ śanaiḥ samam
rodasīrandhre prayayau ambudhau velācalam iva

16. dundubhisiddhaughavākyapuṣpabharaḥ śanaiḥ samam
rodasīrandhre prayayau ambudhau velācalam iva

16. Gradually, the combined mass of drum sounds, the utterances of the multitudes of perfected beings (siddhas), and the showering of flowers, simultaneously moved into the space between heaven and earth, like a shore-mountain moving into the ocean.

Words meanings summery:

• दुन्दुभिसिद्धौघवाक्यपुष्पभरः (dundubhisiddhaughavākyapuṣpabharaḥ) - mass/abundance of drum sounds, words of Siddhas, and showering flowers

• शनैः (śanaiḥ) - slowly, gradually

• समम् (samam) - equally, uniformly, simultaneously

• रोदसीरन्ध्रे (rodasīrandhre) - in the chasm/gap between heaven and earth

• प्रययौ (prayayau) - went forth, proceeded

• अम्बुधौ (ambudhau) - in the ocean

• वेलाचलम् (velācalam) - shore-mountain, mountain on the coast

• इव (iva) - like, as, as if

Words meanings and morphology

दुन्दुभिसिद्धौघवाक्यपुष्पभरः (dundubhisiddhaughavākyapuṣpabharaḥ) - mass/abundance of drum sounds, words of Siddhas, and showering flowers

(noun)

Nominative, masculine, singular of dundubhisiddhaughavākyapuṣpabhara

dundubhisiddhaughavākyapuṣpabhara - mass/abundance of drum sounds, words of Siddhas, and showering flowers

Tatpurusha compound of 'dundubhi' (drum), 'siddhaughavākya' (words of multitude of Siddhas), and 'puṣpabhara' (mass of flowers).

Compound type : tatpuruṣa (dundubhi+siddhaugha+vākya+puṣpa+bhara)

• dundubhi – drum, kettle-drum
  noun (masculine)
• siddhaugha – multitude of perfected beings (siddhas)
  noun (masculine)
  Tatpurusha compound: siddha + ogha. Siddhas are semi-divine beings.
• vākya – word, speech, utterance
  noun (neuter)
  From root √vac (to speak).
  Root: vac (class 2)
• puṣpa – flower
  noun (neuter)
• bhara – mass, abundance, load
  noun (masculine)
  From root √bhṛ (to bear, carry).
  Root: bhṛ (class 1)

Note: Subject of 'prayayau'.

शनैः (śanaiḥ) - slowly, gradually

(indeclinable)

Adverbial formation from 'śana' (slow).

Note: Adverb modifying 'prayayau'.

समम् (samam) - equally, uniformly, simultaneously

(indeclinable)

Note: Adverb modifying 'prayayau'.

रोदसीरन्ध्रे (rodasīrandhre) - in the chasm/gap between heaven and earth

(noun)

Locative, neuter, singular of rodasīrandhra

rodasīrandhra - chasm between heaven and earth

Tatpurusha compound: rodasī (heaven and earth) + randhra (chasm).

Compound type : tatpuruṣa (rodasī+randhra)

• rodasī – heaven and earth (dual)
  noun (feminine)
• randhra – chasm, opening, gap
  noun (neuter)

Note: Indicates location of motion.

प्रययौ (prayayau) - went forth, proceeded

(verb)

3rd person , singular, active, perfect (liṭ) of yā

Perfect

Perfect 3rd person singular, Parasmaipada, with upasarga 'pra'.

Prefix: pra

Root: yā (class 2)

Note: The main verb.

अम्बुधौ (ambudhau) - in the ocean

(noun)

Locative, masculine, singular of ambudhi

ambudhi - ocean, sea (bearer of water)

Tatpurusha compound: ambu (water) + dhi (receptacle, from √dhā).

Compound type : tatpuruṣa (ambu+dhi)

• ambu – water
  noun (neuter)
• dhi – receptacle, ocean
  noun (masculine)
  From √dhā (to place, hold).
  Root: dhā (class 3)

Note: Location for the comparison.

वेलाचलम् (velācalam) - shore-mountain, mountain on the coast

(noun)

Accusative, masculine, singular of velācala

velācala - shore-mountain

Tatpurusha compound: velā (shore) + acala (mountain).

Compound type : tatpuruṣa (velā+acala)

• velā – shore, coast, limit, time
  noun (feminine)
• acala – mountain (lit. not moving)
  noun (masculine)
  Compound: a (negation) + cala (moving).
  Prefix: a

Note: Object of comparison, implied motion.

इव (iva) - like, as, as if

(indeclinable)

Note: Particle indicating comparison.