महाभारतः mahābhārataḥ - book-8, chapter-68, verse-58

तौ शङ्खशब्देन निनादयन्तौ वनानि शैलान्सरितो दिशश्च ।
वित्रासयन्तौ तव पुत्रसेनां युधिष्ठिरं नन्दयतः स्म वीरौ ॥५८॥

58. tau śaṅkhaśabdena ninādayantau; vanāni śailānsarito diśaśca ,
vitrāsayantau tava putrasenāṁ; yudhiṣṭhiraṁ nandayataḥ sma vīrau.

58. tau śaṅkhaśabdena ninādayantau
vanāni śailān saritaḥ diśaḥ ca
vitrāsāyantau tava putrasenām
yudhiṣṭhiram nandayataḥ sma vīrau

58. tau vīrau śaṅkhaśabdena vanāni
śailān saritaḥ ca diśaḥ ninādayantau
tava putrasenām vitrāsāyantau
yudhiṣṭhiram nandayataḥ sma

58. Those two heroes (Arjuna and Krishna), causing the forests, mountains, rivers, and all directions to reverberate with the sound of their conch shells, and striking terror into your sons' army, brought delight to Yudhishthira.

Words meanings summery:

• तौ (tau) - Arjuna and Krishna (those two)

• शङ्खशब्देन (śaṅkhaśabdena) - by the sound of conch shells

• निनादयन्तौ (ninādayantau) - causing to resound, making echo

• वनानि (vanāni) - forests, groves

• शैलान् (śailān) - mountains, rocks

• सरितः (saritaḥ) - rivers, streams

• दिशः (diśaḥ) - directions, quarters of space

• च (ca) - and, also

• वित्रासायन्तौ (vitrāsāyantau) - causing to tremble, terrifying

• तव (tava) - your (Dhritarashtra's) (your)

• पुत्रसेनाम् (putrasenām) - Dhritarashtra's sons' army, the Kaurava army (army of sons, sons' army)

• युधिष्ठिरम् (yudhiṣṭhiram) - Yudhishthira

• नन्दयतः (nandayataḥ) - they delighted, gladdened

• स्म (sma) - (particle indicating past tense when used with present verbs)

• वीरौ (vīrau) - Arjuna and Krishna, the two heroes (two heroes)

Words meanings and morphology

तौ (tau) - Arjuna and Krishna (those two)

(pronoun)

Nominative, masculine, dual of tad

tad - that, he, she, it

शङ्खशब्देन (śaṅkhaśabdena) - by the sound of conch shells

(noun)

Instrumental, masculine, singular of śaṅkhaśabda

śaṅkhaśabda - sound of a conch shell

Compound type : tatpuruṣa (śaṅkha+śabda)

• śaṅkha – conch shell, a kind of spiral shell
  noun (masculine)
• śabda – sound, noise, word
  noun (masculine)

निनादयन्तौ (ninādayantau) - causing to resound, making echo

(adjective)

Nominative, masculine, dual of ninādayat

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

Present Active Participle (Causative)

Derived from causative of root √nad with prefix ni

Prefix: ni

Root: nad (class 1)

Note: Agreeing with 'tau vīrau'.

वनानि (vanāni) - forests, groves

(noun)

Accusative, neuter, plural of vana

vana - forest, grove, wood

शैलान् (śailān) - mountains, rocks

(noun)

Accusative, masculine, plural of śaila

śaila - mountain, rock, hill

सरितः (saritaḥ) - rivers, streams

(noun)

Accusative, feminine, plural of sarit

sarit - river, stream

दिशः (diśaḥ) - directions, quarters of space

(noun)

Accusative, feminine, plural of diś

diś - direction, quarter of the sky, point of the compass

च (ca) - and, also

(indeclinable)

वित्रासायन्तौ (vitrāsāyantau) - causing to tremble, terrifying

(adjective)

Nominative, masculine, dual of vitrāsāyat

vitrāsāyat - causing to tremble, frightening, terrifying

Present Active Participle (Causative)

Derived from causative of root √tras with prefix vi

Prefix: vi

Root: tras (class 1)

Note: Agreeing with 'tau vīrau'.

तव (tava) - your (Dhritarashtra's) (your)

(pronoun)

Genitive, singular of yuṣmad

yuṣmad - you (pronoun)

पुत्रसेनाम् (putrasenām) - Dhritarashtra's sons' army, the Kaurava army (army of sons, sons' army)

(noun)

Accusative, feminine, singular of putrasenā

putrasenā - army of sons

Compound type : tatpuruṣa (putra+senā)

• putra – son, child
  noun (masculine)
• senā – army, host, troop
  noun (feminine)

युधिष्ठिरम् (yudhiṣṭhiram) - Yudhishthira

(proper noun)

Accusative, masculine, singular of yudhiṣṭhira

yudhiṣṭhira - Yudhishthira (eldest of the Pandavas)

नन्दयतः (nandayataḥ) - they delighted, gladdened

(verb)

3rd person , dual, active, present (used with sma for past action) (laṭ) of nandayat

Causative form of root √nand

Root: nand (class 1)

स्म (sma) - (particle indicating past tense when used with present verbs)

(indeclinable)

वीरौ (vīrau) - Arjuna and Krishna, the two heroes (two heroes)

(noun)

Nominative, masculine, dual of vīra

vīra - hero, brave man, warrior