महाभारतः mahābhārataḥ - book-7, chapter-10, verse-12

जरासंधं महाबाहुमुपायेन जनार्दनः ।
परेण घातयामास पृथगक्षौहिणीपतिम् ॥१२॥

12. jarāsaṁdhaṁ mahābāhumupāyena janārdanaḥ ,
pareṇa ghātayāmāsa pṛthagakṣauhiṇīpatim.

12. jarāsaṃdham mahābāhum upāyena janārdanaḥ
pareṇa ghātayāmāsa pṛthak akṣauhiṇīpatim

12. janārdanaḥ upāyena pareṇa mahābāhum pṛthak
akṣauhiṇīpatim jarāsaṃdham ghātayāmāsa

12. Janārdana, the mighty-armed (mahābāhu), through a stratagem (upāya), caused Jarāsandha, the lord of many akṣauhiṇīs, to be killed by another.

Words meanings summery:

• जरासंधम् (jarāsaṁdham) - Jarāsandha (a king's name)

• महाबाहुम् (mahābāhum) - mighty-armed, great-armed

• उपायेन (upāyena) - by means, by a stratagem, by a trick

• जनार्दनः (janārdanaḥ) - Janārdana (a name for Krishna/Vishnu)

• परेण (pareṇa) - through another person (referring to Bhīma) (by another, through another)

• घातयामास (ghātayāmāsa) - caused to be killed, slew

• पृथक् (pṛthak) - each (akṣauhiṇī) separately, implying multiple (separately, distinctly, individually)

• अक्षौहिणीपतिम् (akṣauhiṇīpatim) - lord who commanded many akṣauhiṇīs (lord of an akṣauhiṇī (large army division))

Words meanings and morphology

जरासंधम् (jarāsaṁdham) - Jarāsandha (a king's name)

(proper noun)

Accusative, masculine, singular of jarāsaṃdha

jarāsaṁdha - Jarāsandha (a powerful king of Magadha, adversary of Krishna)

महाबाहुम् (mahābāhum) - mighty-armed, great-armed

(adjective)

Accusative, masculine, singular of mahābāhu

mahābāhu - mighty-armed, strong-armed

Compound type : bahuvrīhi (mahā+bāhu)

• mahā – great, mighty, large
  adjective
• bāhu – arm
  noun (masculine)

उपायेन (upāyena) - by means, by a stratagem, by a trick

(noun)

Instrumental, masculine, singular of upāya

upāya - means, expedient, stratagem, method, approach

जनार्दनः (janārdanaḥ) - Janārdana (a name for Krishna/Vishnu)

(proper noun)

Nominative, masculine, singular of janārdana

janārdana - Janārdana (a name of Krishna or Vishnu, meaning 'agitator of men' or 'giver of boons to men')

परेण (pareṇa) - through another person (referring to Bhīma) (by another, through another)

(pronoun)

Instrumental, masculine, singular of para

para - other, another, supreme, distant

घातयामास (ghātayāmāsa) - caused to be killed, slew

(verb)

3rd person , singular, active, perfect (lit) of ghātayāmāsa

Causative perfect

Formed from the causative stem of root han (to strike, kill) + perfect auxiliary āmāsa.

Root: han (class 2)

पृथक् (pṛthak) - each (akṣauhiṇī) separately, implying multiple (separately, distinctly, individually)

(indeclinable)

Note: Acts as an adverb modifying 'akṣauhiṇīpatim', indicating multiple akṣauhiṇīs.

अक्षौहिणीपतिम् (akṣauhiṇīpatim) - lord who commanded many akṣauhiṇīs (lord of an akṣauhiṇī (large army division))

(noun)

Accusative, masculine, singular of akṣauhiṇīpati

akṣauhiṇīpati - lord of an akṣauhiṇī (a complete army division)

Compound type : tatpuruṣa (akṣauhiṇī+pati)

• akṣauhiṇī – an akṣauhiṇī (a large division of an army, consisting of 21,870 chariots, 21,870 elephants, 65,610 horses, and 109,350 foot-soldiers)
  noun (feminine)
• pati – lord, master, husband
  noun (masculine)