महाभारतः mahābhārataḥ - book-8, chapter-40, verse-13

ततस्तौ रभसौ युद्धे भ्रातरौ भ्रातरं नृप ।
शरैर्ववर्षतुर्घोरैर्महामेघौ यथाचलम् ॥१३॥

13. tatastau rabhasau yuddhe bhrātarau bhrātaraṁ nṛpa ,
śarairvavarṣaturghorairmahāmeghau yathācalam.

13. tataḥ tau rabhasau yuddhe bhrātarau bhrātaram nṛpa
śaraiḥ vavarṣatuḥ ghoraiḥ mahāmeghau yathā acalam

13. tataḥ nṛpa yuddhe tau rabhasau bhrātarau ghoraiḥ
śaraiḥ bhrātaram vavarṣatuḥ yathā mahāmeghau acalam

13. Then, O King, those two impetuous brothers, in the midst of battle, rained dreadful arrows upon their brother, just as two great clouds pour rain upon a mountain.

Words meanings summery:

• ततः (tataḥ) - then, thereupon

• तौ (tau) - those two warriors (the twins) (those two, they two)

• रभसौ (rabhasau) - impetuous, furious, ardent

• युद्धे (yuddhe) - in battle, in combat

• भ्रातरौ (bhrātarau) - the two warrior brothers (the twins) (the two brothers)

• भ्रातरम् (bhrātaram) - their brother (opponent/kinsman) (brother)

• नृप (nṛpa) - O king

• शरैः (śaraiḥ) - with arrows

• ववर्षतुः (vavarṣatuḥ) - they rained, they showered

• घोरैः (ghoraiḥ) - terrible, dreadful, fierce

• महामेघौ (mahāmeghau) - two great clouds

• यथा (yathā) - just as, as

• अचलम् (acalam) - upon a mountain (upon a mountain, immovable)

Words meanings and morphology

ततः (tataḥ) - then, thereupon

(indeclinable)

Note: Indicates sequence of events.

तौ (tau) - those two warriors (the twins) (those two, they two)

(pronoun)

Nominative, masculine, dual of tad

tad - that, those

Note: Refers to the two warriors (the twins).

रभसौ (rabhasau) - impetuous, furious, ardent

(adjective)

Nominative, masculine, dual of rabhasa

rabhasa - impetuous, violent, quick, ardent

Note: Agrees with 'tau' and 'bhrātarau'.

युद्धे (yuddhe) - in battle, in combat

(noun)

Locative, feminine, singular of yudh

yudh - battle, fight, war

भ्रातरौ (bhrātarau) - the two warrior brothers (the twins) (the two brothers)

(noun)

Nominative, masculine, dual of bhrātṛ

bhrātṛ - brother

Note: Refers to the two main subjects, the twins.

भ्रातरम् (bhrātaram) - their brother (opponent/kinsman) (brother)

(noun)

Accusative, masculine, singular of bhrātṛ

bhrātṛ - brother

Note: Object of 'vavarṣatuḥ'.

नृप (nṛpa) - O king

(noun)

Vocative, masculine, singular of nṛpa

nṛpa - king, ruler

Note: An address to the listener/reader.

शरैः (śaraiḥ) - with arrows

(noun)

Instrumental, masculine, plural of śara

śara - arrow

Note: Instrument of 'vavarṣatuḥ'.

ववर्षतुः (vavarṣatuḥ) - they rained, they showered

(verb)

3rd person , dual, active, past perfect (lit) of √vṛṣ

Perfect

3rd person, dual, active voice

Root: √vṛṣ (class 1)

Note: The subject is 'tau bhrātarau'.

घोरैः (ghoraiḥ) - terrible, dreadful, fierce

(adjective)

Instrumental, masculine, plural of ghora

ghora - terrible, dreadful, fierce, awful

Note: Agrees with 'śaraiḥ'.

महामेघौ (mahāmeghau) - two great clouds

(noun)

Nominative, masculine, dual of mahāmegha

mahāmegha - great cloud, large cloud

Compound type : karmadhāraya (mahā+megha)

• mahā – great, large
  adjective
• megha – cloud
  noun (masculine)

Note: Subject of the simile, parallel to 'tau bhrātarau'.

यथा (yathā) - just as, as

(indeclinable)

Note: Introduces the simile.

अचलम् (acalam) - upon a mountain (upon a mountain, immovable)

(noun)

Accusative, masculine, singular of acala

acala - mountain, immovable

Note: Object of implied action of 'raining'.