महाभारतः mahābhārataḥ - book-8, chapter-63, verse-22

तौ तु दृष्ट्वा महाराज राजमानौ महारथौ ।
सिद्धचारणसंघानां विस्मयः समपद्यत ॥२२॥

22. tau tu dṛṣṭvā mahārāja rājamānau mahārathau ,
siddhacāraṇasaṁghānāṁ vismayaḥ samapadyata.

22. tau tu dṛṣṭvā mahārāja rājamānau mahārathau
| siddhacāraṇasaṃghānām vismayaḥ samapadyata

22. mahārāja tu (yadā) siddhacāraṇasaṃghānām (janāḥ) tau
rājamānau mahārathau dṛṣṭvā (tadā teṣāṃ) vismayaḥ samapadyata

22. But, O great king, when (the celestial beings) saw those two (Arjuna and Krishna), shining and great warriors (mahārathau), astonishment arose among the hosts of Siddhas and Caraṇas.

Words meanings summery:

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

• तु (tu) - but, indeed, however

• दृष्ट्वा (dṛṣṭvā) - having seen

• महाराज (mahārāja) - Addressing Dhṛtarāṣṭra (O great king)

• राजमानौ (rājamānau) - describing Arjuna and Krishna (shining, resplendent, glorious)

• महारथौ (mahārathau) - describing Arjuna and Krishna (great warriors, great chariot-fighters)

• सिद्धचारणसंघानाम् (siddhacāraṇasaṁghānām) - of the hosts/multitudes of Siddhas and Caraṇas

• विस्मयः (vismayaḥ) - astonishment, wonder

• समपद्यत (samapadyata) - arose, occurred, happened

Words meanings and morphology

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

(pronoun)

Nominative, masculine, dual of tad

tad - that, he, she, it

तु (tu) - but, indeed, however

(indeclinable)

दृष्ट्वा (dṛṣṭvā) - having seen

(indeclinable)

absolutive (gerund)

from √dṛś + -tvā

Root: dṛś (class 1)

महाराज (mahārāja) - Addressing Dhṛtarāṣṭra (O great king)

(noun)

Vocative, masculine, singular of mahārāja

mahārāja - great king, emperor

Compound type : karmadhāraya (mahā+rājan)

• mahā – great, mighty
  adjective (feminine)
• rājan – king, ruler
  noun (masculine)

राजमानौ (rājamānau) - describing Arjuna and Krishna (shining, resplendent, glorious)

(adjective)

Nominative, masculine, dual of rājamāna

rājamāna - shining, resplendent, glorious

present participle (ātmanepada)

from √rāj (to shine, rule) + śānac

Root: rāj (class 1)

महारथौ (mahārathau) - describing Arjuna and Krishna (great warriors, great chariot-fighters)

(noun)

Nominative, masculine, dual of mahāratha

mahāratha - great warrior, chief hero, one who can fight ten thousand warriors from a single chariot

Compound type : karmadhāraya (mahā+ratha)

• mahā – great, mighty
  adjective (feminine)
• ratha – chariot
  noun (masculine)

सिद्धचारणसंघानाम् (siddhacāraṇasaṁghānām) - of the hosts/multitudes of Siddhas and Caraṇas

(noun)

Genitive, masculine, plural of siddhacāraṇasaṃgha

siddhacāraṇasaṁgha - host of Siddhas and Caraṇas

Compound type : dvandva (siddha+cāraṇa+saṃgha)

• siddha – perfected one, celestial being
  noun (masculine)
• cāraṇa – celestial bard, wanderer
  noun (masculine)
• saṃgha – multitude, host, assembly
  noun (masculine)

विस्मयः (vismayaḥ) - astonishment, wonder

(noun)

Nominative, masculine, singular of vismaya

vismaya - astonishment, wonder, surprise

from vi-smi + -a

Prefix: vi

Root: smi (class 1)

समपद्यत (samapadyata) - arose, occurred, happened

(verb)

3rd person , singular, middle, imperfect (laṅ) of sampad

Prefixes: sam+ā

Root: pad (class 4)