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

सिद्धानां साधुवादेन सह वै सहसा ततः ।
देवदुन्दुभयो नेदुः प्रतिश्रुत्पूरिताचलाः ॥ ७ ॥

siddhānāṃ sādhuvādena saha vai sahasā tataḥ ,
devadundubhayo neduḥ pratiśrutpūritācalāḥ 7

7. siddhānām sādhuvādena saha vai sahasā tataḥ
devadundubhayaḥ neduḥ pratiśrutpūritācalāḥ

7. tataḥ sahasā siddhānām sādhuvādena saha vai
pratiśrutpūritācalāḥ devadundubhayaḥ neduḥ

7. Then, suddenly, accompanied by the cries of "excellent!" from the perfected beings (siddhas), the divine drums resounded, their echoes filling the mountains.

Words meanings summery:

• सिद्धानाम् (siddhānām) - of the perfected beings

• साधुवादेन (sādhuvādena) - with a cry of "well done!" or "excellent!"

• सह (saha) - with, along with, accompanied by

• वै (vai) - emphasizes the preceding word or statement (indeed, surely, certainly)

• सहसा (sahasā) - suddenly, unexpectedly, forcibly

• ततः (tataḥ) - then, thereupon, from there

• देवदुन्दुभयः (devadundubhayaḥ) - divine drums

• नेदुः (neduḥ) - resounded, thundered, roared

• प्रतिश्रुत्पूरिताचलाः (pratiśrutpūritācalāḥ) - filling the mountains with echoes, whose mountains are filled with echoes

Words meanings and morphology

सिद्धानाम् (siddhānām) - of the perfected beings

(noun)

Genitive, masculine, plural of siddha

siddha - accomplished, perfected, successful; a class of semi-divine beings

Past Passive Participle

From root 'sidh' (to accomplish, succeed).

Root: sidh (class 1)

साधुवादेन (sādhuvādena) - with a cry of "well done!" or "excellent!"

(noun)

Instrumental, masculine, singular of sādhuvāda

sādhuvāda - an exclamation of "sādhu!" (excellent, well done), applause, praise

Compound of 'sādhu' (good, excellent) and 'vāda' (speech, saying).

Compound type : Tatpuruṣa (sādhu+vāda)

• sādhu – good, excellent, virtuous, well
  adjective
• vāda – speech, discourse, statement, sound
  noun (masculine)
  From root 'vad' (to speak, to say).
  Root: vad (class 1)

सह (saha) - with, along with, accompanied by

(indeclinable)

Preposition/adverb.

वै (vai) - emphasizes the preceding word or statement (indeed, surely, certainly)

(indeclinable)

An emphatic particle, often untranslated in English.

सहसा (sahasā) - suddenly, unexpectedly, forcibly

(indeclinable)

Adverbial form.

ततः (tataḥ) - then, thereupon, from there

(indeclinable)

Adverb derived from pronominal stem 'tad'.

देवदुन्दुभयः (devadundubhayaḥ) - divine drums

(noun)

Nominative, masculine, plural of devadundubhi

devadundubhi - a divine drum, drum of the gods

Compound of 'deva' (god) and 'dundubhi' (drum).

Compound type : Tatpuruṣa (deva+dundubhi)

• deva – god, deity, divine
  noun (masculine)
  From root 'div' (to shine).
  Root: div (class 4)
• dundubhi – a drum, war-drum
  noun (masculine)
  Onomatopoeic.

नेदुः (neduḥ) - resounded, thundered, roared

(verb)

3rd person , plural, active, perfect past (liṭ) of √nad

perfect past tense

3rd person plural perfect of 'nad'.

Root: nad (class 1)

प्रतिश्रुत्पूरिताचलाः (pratiśrutpūritācalāḥ) - filling the mountains with echoes, whose mountains are filled with echoes

(adjective)

Nominative, masculine, plural of pratiśrutpūritācalā

pratiśrutpūritācalā - one who has mountains filled with echoes (describes the drums)

Bahuvrīhi compound. 'pratiśrut' (echo) + 'pūrita' (filled) + 'acala' (mountain). The mountains are filled with echoes.

Compound type : Bahuvrīhi (pratiśrut+pūrita+acala)

• pratiśrut – echo, reverberation
  noun (feminine)
  From 'prati' (back, against) + 'śrut' (hearing, sound).
  Prefix: prati
  Root: śru (class 5)
• pūrita – filled, accomplished
  adjective
  Past Passive Participle
  From root 'pṛ' (to fill).
  Root: pṛ (class 9)
• acala – mountain, not moving
  noun (masculine)
  'a' (not) + 'cala' (moving).

Note: Adjective describing 'devadundubhayaḥ'.