महाभारतः mahābhārataḥ - book-9, chapter-56, verse-9

अपारवीर्यौ संप्रेक्ष्य प्रगृहीतगदावुभौ ।
विस्मयं परमं जग्मुर्देवगन्धर्वदानवाः ॥९॥

9. apāravīryau saṁprekṣya pragṛhītagadāvubhau ,
vismayaṁ paramaṁ jagmurdevagandharvadānavāḥ.

9. apāravīryau samprekṣya pragṛhītagadau ubhau
vismayaṃ paramaṃ jagmuḥ devagandharvadānavāḥ

9. apāravīryau pragṛhītagadau ubhau samprekṣya
devagandharvadānavāḥ paramaṃ vismayaṃ jagmuḥ

9. Having clearly seen both of them, wielding their maces and possessing immeasurable might, the gods, Gandharvas, and Danavas were struck with supreme astonishment.

Words meanings summery:

• अपारवीर्यौ (apāravīryau) - of boundless strength, immeasurable valor

• सम्प्रेक्ष्य (samprekṣya) - having clearly seen, having observed

• प्रगृहीतगदौ (pragṛhītagadau) - holding maces, wielding maces

• उभौ (ubhau) - both

• विस्मयं (vismayaṁ) - astonishment, wonder

• परमं (paramaṁ) - supreme, great, highest

• जग्मुः (jagmuḥ) - they reached (a state of) astonishment (they went, they attained)

• देवगन्धर्वदानवाः (devagandharvadānavāḥ) - gods, Gandharvas, and Danavas

Words meanings and morphology

अपारवीर्यौ (apāravīryau) - of boundless strength, immeasurable valor

(adjective)

Nominative, masculine, dual of apāravīrya

apāravīrya - of boundless or immeasurable strength/valor

Compound type : bahuvrīhi (a+pāra+vīrya)

• a – not, un-
  indeclinable
• pāra – limit, boundary, end
  noun (masculine)
• vīrya – strength, valor, energy
  noun (neuter)

सम्प्रेक्ष्य (samprekṣya) - having clearly seen, having observed

(indeclinable)

Absolutive

Formed from root īkṣ with prefixes sam and pra.

Prefixes: sam+pra

Root: īkṣ (class 1)

प्रगृहीतगदौ (pragṛhītagadau) - holding maces, wielding maces

(adjective)

Nominative, masculine, dual of pragṛhītagada

pragṛhītagada - having taken up a mace, mace-wielding

Compound type : bahuvrīhi (pragṛhīta+gada)

• pragṛhīta – grasped, taken, held
  adjective
  Past Passive Participle
  From root grah with prefix pra.
  Prefix: pra
  Root: grah (class 9)
• gada – mace, club
  noun (feminine)

उभौ (ubhau) - both

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

विस्मयं (vismayaṁ) - astonishment, wonder

(noun)

Accusative, masculine, singular of vismaya

vismaya - astonishment, wonder, surprise

Prefix: vi

Root: smi (class 1)

परमं (paramaṁ) - supreme, great, highest

(adjective)

Accusative, masculine, singular of parama

parama - supreme, highest, excellent, utmost

जग्मुः (jagmuḥ) - they reached (a state of) astonishment (they went, they attained)

(verb)

3rd person , plural, active, Perfect (lit) of gam

Root: gam (class 1)

देवगन्धर्वदानवाः (devagandharvadānavāḥ) - gods, Gandharvas, and Danavas

(noun)

Nominative, masculine, plural of devagandharvadānava

devagandharvadānava - gods, Gandharvas and Danavas (as a collective)

Compound type : dvandva (deva+gandharva+dānava)

• deva – god
  noun (masculine)
• gandharva – Gandharva (a class of celestial beings)
  noun (masculine)
• dānava – Danava (a class of demons)
  noun (masculine)