योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-49, verse-39

अथोदभूद्बलं भीमं ससुरासुरभीतिदम् ।
गर्जद्रक्षोमहानादवाद्यनृत्यत्कबन्धकम् ॥ ३९ ॥

athodabhūdbalaṃ bhīmaṃ sasurāsurabhītidam ,
garjadrakṣomahānādavādyanṛtyatkabandhakam 39

39. atha udabhūt balam bhīmam sasurāsurabhītidam
gargadrākṣo-mahānādavādyanṛtyat-kabandhakam

39. atha bhīmam sasurāsurabhītidam
gargadrākṣo-mahānādavādyanṛtyat-kabandhakam balam udabhūt

39. Then, a terrible army emerged, striking fear into both gods and demons, where headless trunks danced to the music of the great roars from the roaring Rākṣasas.

Words meanings summery:

• अथ (atha) - Then (Then, next, now, moreover)

• उदभूत् (udabhūt) - emerged (arose, appeared, came into being)

• बलम् (balam) - army (army, force, strength)

• भीमम् (bhīmam) - terrible (terrible, dreadful, fearful, mighty)

• ससुरासुरभीतिदम् (sasurāsurabhītidam) - striking fear into both gods and demons (terrifying to gods and demons)

• गर्गद्राक्षो-महानादवाद्यनृत्यत्-कबन्धकम् (gargadrākṣo-mahānādavādyanṛtyat-kabandhakam) - where headless trunks danced to the music of the great roars from the roaring Rākṣasas (where headless torsos dance to the music of the great roars of roaring Rākṣasas)

Words meanings and morphology

अथ (atha) - Then (Then, next, now, moreover)

(indeclinable)

उदभूत् (udabhūt) - emerged (arose, appeared, came into being)

(verb)

3rd person , singular, active, past (luṅ) of ud-bhū

Aorist

Root aorist, 3rd person singular

Prefix: ud

Root: bhū (class 1)

बलम् (balam) - army (army, force, strength)

(noun)

Nominative, neuter, singular of bala

bala - Strength, power, force, army, military force

Note: Can also be accusative singular

भीमम् (bhīmam) - terrible (terrible, dreadful, fearful, mighty)

(adjective)

Nominative, neuter, singular of bhīma

bhīma - Terrible, dreadful, formidable, mighty

Root: bhī (class 3)

Note: Modifies 'balam'. Can also be accusative singular.

ससुरासुरभीतिदम् (sasurāsurabhītidam) - striking fear into both gods and demons (terrifying to gods and demons)

(adjective)

Nominative, neuter, singular of sasurāsurabhītidam

sasurāsurabhītidam - Causing fear to gods and demons

Bahuvrihi compound, refers to an entity that possesses the characteristic of causing fear to gods and demons.

Compound type : bahuvrīhi (sa+sura+asura+bhīti+da)

• sa – With, accompanied by, endowed with
  indeclinable
  Prefix indicating association or possession
• sura – God, deity
  noun (masculine)
• asura – Demon, anti-god
  noun (masculine)
• bhīti – Fear, dread
  noun (feminine)
  Root: bhī (class 3)
• da – Giving, bestowing, causing
  adjective (masculine)
  Derived from root 'dā' (to give)
  Root: dā (class 3)

Note: Modifies 'balam'. Can also be accusative singular.

गर्गद्राक्षो-महानादवाद्यनृत्यत्-कबन्धकम् (gargadrākṣo-mahānādavādyanṛtyat-kabandhakam) - where headless trunks danced to the music of the great roars from the roaring Rākṣasas (where headless torsos dance to the music of the great roars of roaring Rākṣasas)

(adjective)

Nominative, neuter, singular of gargadrākṣo-mahānādavādyanṛtyat-kabandhaka

gargadrākṣo-mahānādavādyanṛtyat-kabandhaka - Having headless torsos dancing to the sound/music of the great roars of roaring Rākṣasas

Bahuvrihi compound, refers to an entity characterized by the described scene.

Compound type : bahuvrīhi (gargat+rakṣas+mahānāda+vādya+nṛtyat+kabandhaka)

• gargat – Roaring, thundering
  adjective (masculine)
  Present Active Participle
  From root 'garj' (to roar)
  Root: garj (class 1)
• rakṣas – Rākṣasa, demon
  noun (neuter)
• mahānāda – Great sound, loud roar
  noun (masculine)
  Compound of mahā (great) and nāda (sound)
• vādya – Musical instrument, music, sound (produced by an instrument)
  noun (neuter)
  Gerundive
  From root 'vad' (to speak, to sound)
  Root: vad (class 1)
• nṛtyat – Dancing
  adjective (masculine)
  Present Active Participle
  From root 'nṛt' (to dance)
  Root: nṛt (class 4)
• kabandhaka – Headless torso, trunk
  noun (masculine)

Note: Modifies 'balam'. Can also be accusative singular.