महाभारतः mahābhārataḥ - book-8, chapter-63, verse-18

उभौ वरायुधधरावुभौ रणकृतश्रमौ ।
उभौ च बाहुशब्देन नादयन्तौ नभस्तलम् ॥१८॥

18. ubhau varāyudhadharāvubhau raṇakṛtaśramau ,
ubhau ca bāhuśabdena nādayantau nabhastalam.

18. ubhau varāyudhadharau ubhau raṇakṛtaśramau
ubhau ca bāhuśabdena nādayantau nabhastalam

18. ubhau varāyudhadharau,
ubhau raṇakṛtaśramau ca,
ubhau bāhuśabdena nabhastalam nādayantau

18. Both were bearing excellent weapons, both had exerted themselves in battle, and both were making the sky resound with the sound of their arms.

Words meanings summery:

• उभौ (ubhau) - both

• वरायुधधरौ (varāyudhadharau) - bearing excellent weapons

• उभौ (ubhau) - both

• रणकृतश्रमौ (raṇakṛtaśramau) - having exerted themselves in battle, having performed effort in battle

• उभौ (ubhau) - both

• च (ca) - and, also

• बाहुशब्देन (bāhuśabdena) - with the sound produced by slapping their arms as a challenge or twanging their bowstrings (with the sound of their arms)

• नादयन्तौ (nādayantau) - making sound, causing to resound

• नभस्तलम् (nabhastalam) - the surface of the sky, the firmament

Words meanings and morphology

उभौ (ubhau) - both

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

वरायुधधरौ (varāyudhadharau) - bearing excellent weapons

(adjective)

Nominative, masculine, dual of varāyudhadhara

varāyudhadhara - bearing excellent weapons

Compound type : tatpuruṣa (vara+āyudha+dhara)

• vara – excellent, best, finest
  adjective
• āyudha – weapon, instrument, implement
  noun (neuter)
• dhara – bearing, holding, carrying, supporting
  adjective
  agent noun
  Derived from the root dhṛ (to hold, bear)
  Root: dhṛ (class 1)

उभौ (ubhau) - both

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

रणकृतश्रमौ (raṇakṛtaśramau) - having exerted themselves in battle, having performed effort in battle

(adjective)

Nominative, masculine, dual of raṇakṛtaśrama

raṇakṛtaśrama - having made effort in battle, having exerted themselves in battle

Compound type : bahuvrīhi (raṇa+kṛtaśrama)

• raṇa – battle, combat, war
  noun (masculine)
• kṛtaśrama – one for whom effort has been made; having made effort
  adjective (masculine)

उभौ (ubhau) - both

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

च (ca) - and, also

(indeclinable)

बाहुशब्देन (bāhuśabdena) - with the sound produced by slapping their arms as a challenge or twanging their bowstrings (with the sound of their arms)

(noun)

Instrumental, masculine, singular of bāhuśabda

bāhuśabda - sound of arms (e.g., arm-slapping, twanging of bowstrings)

Compound type : tatpuruṣa (bāhu+śabda)

• bāhu – arm
  noun (masculine)
• śabda – sound, word, noise
  noun (masculine)

नादयन्तौ (nādayantau) - making sound, causing to resound

(adjective)

Nominative, masculine, dual of nādayant

nādayant - making sound, causing to resound, filling with noise

Present Active Participle (causal)

Present active participle of the causal form of root nad (to sound)

Root: nad (class 1)

नभस्तलम् (nabhastalam) - the surface of the sky, the firmament

(noun)

Accusative, neuter, singular of nabhastala

nabhastala - sky-region, surface of the sky, firmament

Compound type : tatpuruṣa (nabhas+tala)

• nabhas – sky, atmosphere, heaven
  noun (neuter)
• tala – surface, plane, region
  noun (neuter)