महाभारतः mahābhārataḥ - book-8, chapter-32, verse-13

तस्मिन्सैन्ये महावर्ते पातालावर्तसंनिभे ।
निमग्नं तं रथं मत्वा नेदुः संशप्तका मुदा ॥१३॥

13. tasminsainye mahāvarte pātālāvartasaṁnibhe ,
nimagnaṁ taṁ rathaṁ matvā neduḥ saṁśaptakā mudā.

13. tasmin sainye mahāvarte pātālāvarta-saṃnibhe
nimagnaṃ tam ratham matvā neduḥ saṃśaptakā mudā

13. saṃśaptakāḥ tasmin pātālāvarta-saṃnibhe mahāvarte
sainye tam ratham nimagnam matvā mudā neduḥ

13. The Saṃśaptakas, believing that chariot to be submerged in that army—a great whirlpool resembling the eddies of the netherworld (Pātāla)—roared with delight.

Words meanings summery:

• तस्मिन् (tasmin) - in that

• सैन्ये (sainye) - in the army

• महावर्ते (mahāvarte) - in the great whirlpool

• पातालावर्त-संनिभे (pātālāvarta-saṁnibhe) - resembling the whirlpool of the netherworld

• निमग्नं (nimagnaṁ) - submerged, sunk

• तम् (tam) - that

• रथम् (ratham) - chariot

• मत्वा (matvā) - having thought, having considered

• नेदुः (neduḥ) - they roared, they shouted

• संशप्तका (saṁśaptakā) - a specific group of warriors who vowed to kill Arjuna or die (the Saṃśaptakas (a specific group of warriors))

• मुदा (mudā) - with joy, happily

Words meanings and morphology

तस्मिन् (tasmin) - in that

(pronoun)

Locative, neuter, singular of tad

tad - that, this

सैन्ये (sainye) - in the army

(noun)

Locative, neuter, singular of sainya

sainya - army, host

महावर्ते (mahāvarte) - in the great whirlpool

(noun)

Locative, masculine, singular of mahāvarta

mahāvarta - great whirlpool

Compound type : karmadhāraya (mahā+āvarta)

• mahā – great, large, mighty
  adjective
• āvarta – whirlpool, eddy
  noun (masculine)
  Prefix: ā

पातालावर्त-संनिभे (pātālāvarta-saṁnibhe) - resembling the whirlpool of the netherworld

(adjective)

Locative, masculine, singular of pātālāvarta-saṃnibha

pātālāvarta-saṁnibha - resembling the whirlpool of Pātāla

Compound type : bahuvrīhi (pātāla+āvarta+saṃnibha)

• pātāla – netherworld, a region below the earth
  noun (neuter)
• āvarta – whirlpool, eddy
  noun (masculine)
  Prefix: ā
• saṃnibha – resembling, similar to
  adjective
  Prefix: sam
  Root: bhā

Note: Qualifies mahāvarte and sainye. Pātālāvarta is a Tatpuruṣa compound meaning 'whirlpool of Pātāla'.

निमग्नं (nimagnaṁ) - submerged, sunk

(adjective)

Accusative, masculine, singular of nimagna

nimagna - submerged, sunk, immersed

Past Passive Participle

From root maj (to sink) with prefix ni (down)

Prefix: ni

Root: maj (class 6)

Note: Qualifies ratham

तम् (tam) - that

(pronoun)

Accusative, masculine, singular of tad

tad - that, this

रथम् (ratham) - chariot

(noun)

Accusative, masculine, singular of ratha

ratha - chariot

मत्वा (matvā) - having thought, having considered

(indeclinable)

absolutive (kvā-pratyaya)

From root man (to think)

Root: man (class 4)

नेदुः (neduḥ) - they roared, they shouted

(verb)

3rd person , plural, active, perfect (Lit) of nad

Root: nad (class 1)

संशप्तका (saṁśaptakā) - a specific group of warriors who vowed to kill Arjuna or die (the Saṃśaptakas (a specific group of warriors))

(proper noun)

Nominative, masculine, plural of saṃśaptaka

saṁśaptaka - a sworn warrior, one bound by an oath (specifically those who vowed to kill Arjuna or die)

मुदा (mudā) - with joy, happily

(noun)

Instrumental, feminine, singular of mud

mud - joy, delight, pleasure