महाभारतः mahābhārataḥ - book-5, chapter-48, verse-23

शङ्खचक्रगदाहस्तं यदा द्रक्ष्यसि केशवम् ।
पर्याददानं चास्त्राणि भीमधन्वानमर्जुनम् ॥२३॥

23. śaṅkhacakragadāhastaṁ yadā drakṣyasi keśavam ,
paryādadānaṁ cāstrāṇi bhīmadhanvānamarjunam.

23. śaṅkhacakragadāhastam yadā drakṣyasi keśavam
paryādadhānam ca astrāṇi bhīmadhanvānam arjunam

23. When you see Keśava [Krishna] holding a conch, disc, and mace, and Arjuna—the one with the formidable bow—taking up weapons...

Words meanings summery:

• शङ्खचक्रगदाहस्तम् (śaṅkhacakragadāhastam) - one whose hand holds a conch, disc, and mace

• यदा (yadā) - when, at what time

• द्रक्ष्यसि (drakṣyasi) - you will see

• केशवम् (keśavam) - Keśava (Krishna) (Keśava (an epithet of Krishna or Vishnu))

• पर्यादधानम् (paryādadhānam) - taking up, collecting, holding

• च (ca) - and, also

• अस्त्राणि (astrāṇi) - weapons, missiles

• भीमधन्वानम् (bhīmadhanvānam) - one with a terrible/formidable bow

• अर्जुनम् (arjunam) - Arjuna (name of a Pandava hero)

Words meanings and morphology

शङ्खचक्रगदाहस्तम् (śaṅkhacakragadāhastam) - one whose hand holds a conch, disc, and mace

(adjective)

Accusative, masculine, singular of śaṅkhacakragadāhasta

śaṅkhacakragadāhasta - one whose hand holds a conch, a disc, and a mace (an epithet of Vishnu/Krishna)

Compound type : bahuvrīhi (śaṅkha+cakra+gadā+hasta)

• śaṅkha – conch-shell
  noun (masculine)
• cakra – disc, wheel
  noun (neuter)
• gadā – mace, club
  noun (feminine)
• hasta – hand
  noun (masculine)

यदा (yadā) - when, at what time

(indeclinable)

Derived from relative pronoun 'yad'

द्रक्ष्यसि (drakṣyasi) - you will see

(verb)

2nd person , singular, active, future indicative (lṛṭ) of dṛś

Root: dṛś (class 1)

केशवम् (keśavam) - Keśava (Krishna) (Keśava (an epithet of Krishna or Vishnu))

(proper noun)

Accusative, masculine, singular of keśava

keśava - Keśava (epithet of Vishnu/Krishna, 'having beautiful hair' or 'slayer of the demon Keśī')

पर्यादधानम् (paryādadhānam) - taking up, collecting, holding

(adjective)

Accusative, masculine, singular of paryādadhāna

paryādadhāna - taking up, putting on, surrounding, collecting

Present Active Participle

From root dhā (to place, hold) with prefixes pari and ā

Prefixes: pari+ā

Root: dhā (class 3)

च (ca) - and, also

(indeclinable)

अस्त्राणि (astrāṇi) - weapons, missiles

(noun)

Accusative, neuter, plural of astra

astra - weapon, missile, projectile

भीमधन्वानम् (bhīmadhanvānam) - one with a terrible/formidable bow

(adjective)

Accusative, masculine, singular of bhīmadhanvan

bhīmadhanvan - having a terrible bow (an epithet, especially of Arjuna)

Compound type : bahuvrīhi (bhīma+dhanvan)

• bhīma – terrible, formidable, dreadful
  adjective (masculine)
  Derived from root bhī (to fear)
  Root: bhī (class 3)
• dhanvan – bow, arc
  noun (neuter)

अर्जुनम् (arjunam) - Arjuna (name of a Pandava hero)

(proper noun)

Accusative, masculine, singular of arjuna

arjuna - Arjuna (name of a celebrated hero of the Mahabharata), white, clear