महाभारतः mahābhārataḥ - book-1, chapter-55, verse-31

ततो निमित्ते कस्मिंश्चिद्धर्मराजो युधिष्ठिरः ।
वनं प्रस्थापयामास भ्रातरं वै धनंजयम् ॥३१॥

31. tato nimitte kasmiṁściddharmarājo yudhiṣṭhiraḥ ,
vanaṁ prasthāpayāmāsa bhrātaraṁ vai dhanaṁjayam.

31. tataḥ nimitte kasmin_cit dharmarājaḥ yudhiṣṭhiraḥ
vanam prasthāpayāmāsa bhrātaram vai dhanañjayam

31. Then, for some reason, King Yudhishthira, the Dharmaraja, sent his brother Dhananjaya (Arjuna) to the forest.

Words meanings summery:

• ततः (tataḥ) - then, thereafter (then, from that, thereafter)

• निमित्ते (nimitte) - on account of a particular reason/pretext (on a pretext, occasion, cause)

• कस्मिन्_चित् (kasmin_cit) - on some particular pretext (in some, in a certain)

• धर्मराजः (dharmarājaḥ) - King Yudhishthira, known as the king of righteousness (King of Dharma, righteous king)

• युधिष्ठिरः (yudhiṣṭhiraḥ) - Yudhishthira, the eldest Pandava brother (Yudhishthira)

• वनम् (vanam) - to the forest (for exile) (forest, wood)

• प्रस्थापयामास (prasthāpayāmāsa) - sent (Arjuna) to the forest (caused to go forth, sent, despatched)

• भ्रातरम् (bhrātaram) - his brother (Arjuna) (brother)

• वै (vai) - indeed (emphasizing the identity) (indeed, certainly, verily)

• धनञ्जयम् (dhanañjayam) - Dhananjaya, i.e., Arjuna (Dhananjaya ('conqueror of wealth'))

Words meanings and morphology

ततः (tataḥ) - then, thereafter (then, from that, thereafter)

(indeclinable)

निमित्ते (nimitte) - on account of a particular reason/pretext (on a pretext, occasion, cause)

(noun)

Locative, neuter, singular of nimitta

nimitta - cause, reason, motive, sign, omen

derived from root mā, to measure, with ni

Prefix: ni

Root: mā (class 3)

कस्मिन्_चित् (kasmin_cit) - on some particular pretext (in some, in a certain)

(pronoun)

Locative, neuter, singular of kim_cit

kim_cit - something, anything, a certain, some

Compound type : avyayībhāva (kim+cit)

• kim – who, what, which
  pronoun
• cit – an enclitic particle conveying indefiniteness (e.g., 'some', 'certain')
  indeclinable

Note: Declined form of 'kimcit' agreeing with 'nimitte'.

धर्मराजः (dharmarājaḥ) - King Yudhishthira, known as the king of righteousness (King of Dharma, righteous king)

(noun)

Nominative, masculine, singular of dharmarāja

dharmarāja - king of righteousness, righteous king; epithet of Yama, Yudhishthira

Compound type : tatpuruṣa (dharma+rājan)

• dharma – duty, righteousness, law, virtue, religion
  noun (masculine)
• rājan – king, ruler
  noun (masculine)

युधिष्ठिरः (yudhiṣṭhiraḥ) - Yudhishthira, the eldest Pandava brother (Yudhishthira)

(noun)

Nominative, masculine, singular of yudhiṣṭhira

yudhiṣṭhira - Yudhishthira (name of the eldest Pandava); firm in battle

वनम् (vanam) - to the forest (for exile) (forest, wood)

(noun)

Accusative, neuter, singular of vana

vana - forest, wood, grove, thicket

प्रस्थापयामास (prasthāpayāmāsa) - sent (Arjuna) to the forest (caused to go forth, sent, despatched)

(verb)

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

causative

root sthā with pra, causative form

Prefix: pra

Root: sthā (class 1)

भ्रातरम् (bhrātaram) - his brother (Arjuna) (brother)

(noun)

Accusative, masculine, singular of bhrātṛ

bhrātṛ - brother

वै (vai) - indeed (emphasizing the identity) (indeed, certainly, verily)

(indeclinable)

धनञ्जयम् (dhanañjayam) - Dhananjaya, i.e., Arjuna (Dhananjaya ('conqueror of wealth'))

(noun)

Accusative, masculine, singular of dhanañjaya

dhanañjaya - conqueror of wealth, Arjuna; fire

Compound type : bahuvrīhi (dhana+jaya)

• dhana – wealth, riches, property
  noun (neuter)
• jaya – victory, conquest, conqueror
  noun (masculine)
  agent noun
  derived from root ji (to conquer)
  Root: ji (class 1)