महाभारतः mahābhārataḥ - book-12, chapter-161, verse-9

समाप्तवचने तस्मिन्नर्थशास्त्रविशारदः ।
पार्थो वाक्यार्थतत्त्वज्ञो जगौ वाक्यमतन्द्रितः ॥९॥

9. samāptavacane tasminnarthaśāstraviśāradaḥ ,
pārtho vākyārthatattvajño jagau vākyamatandritaḥ.

9. samāpta-vacane tasmin artha-śāstra-viśāradaḥ pārthaḥ
vākya-artha-tattvajñaḥ jagau vākyam atandritaḥ

9. tasmin artha-śāstra-viśāradaḥ samāpta-vacane
vākya-artha-tattvajñaḥ pārthaḥ atandritaḥ vākyam jagau

9. When he, who was proficient in the science of material prosperity (artha-śāstra), had concluded his speech, Pārtha, who understood the true meaning of sentences, then spoke tirelessly.

Words meanings summery:

• समाप्त-वचने (samāpta-vacane) - when his speech was concluded (in the completed speech, when the speech was finished)

• तस्मिन् (tasmin) - when he (in him, when he)

• अर्थ-शास्त्र-विशारदः (artha-śāstra-viśāradaḥ) - proficient in the science of material prosperity (artha-śāstra) (skilled in artha-śāstra, expert in political economy)

• पार्थः (pārthaḥ) - Pārtha (Arjuna) (son of Pṛthā, Arjuna)

• वाक्य-अर्थ-तत्त्वज्ञः (vākya-artha-tattvajñaḥ) - who understood the true meaning of sentences (one who knows the essence of sentence meanings)

• जगौ (jagau) - he spoke (he spoke, he sang, he said)

• वाक्यम् (vākyam) - words, speech (speech, words, sentence)

• अतन्द्रितः (atandritaḥ) - tirelessly, without lassitude (untired, vigilant, tireless, without lassitude)

Words meanings and morphology

समाप्त-वचने (samāpta-vacane) - when his speech was concluded (in the completed speech, when the speech was finished)

(noun)

Locative, neuter, singular of samāpta-vacana

samāpta-vacana - finished speech, concluding words

Compound `samāpta` (completed) + `vacana` (speech).

Compound type : karmadhāraya (samāpta+vacana)

• samāpta – completed, finished, concluded
  adjective (neuter)
  Past Passive Participle
  From `sam` + `āp` (to obtain) + `kta` suffix.
  Prefix: sam
  Root: āp (class 5)
• vacana – speech, word, saying
  noun (neuter)
  From root `vac` (to speak) + `ana` suffix.
  Root: vac (class 2)

Note: Part of locative absolute.

तस्मिन् (tasmin) - when he (in him, when he)

(pronoun)

Locative, masculine, singular of tad

tad - that, he, she, it

Locative singular of demonstrative pronoun `tad`.

अर्थ-शास्त्र-विशारदः (artha-śāstra-viśāradaḥ) - proficient in the science of material prosperity (artha-śāstra) (skilled in artha-śāstra, expert in political economy)

(adjective)

Nominative, masculine, singular of artha-śāstra-viśārada

artha-śāstra-viśārada - skilled in the science of wealth/polity, expert in artha-śāstra

Tatpuruṣa compound: `artha-śāstra` (science of wealth/polity) + `viśārada` (expert).

Compound type : tatpuruṣa (artha-śāstra+viśārada)

• artha – purpose, wealth, material prosperity
  noun (masculine)
  Root: ṛ
• śāstra – treatise, science, scripture, rule
  noun (neuter)
  From root `śās` (to teach, instruct).
  Root: śās (class 2)
• viśārada – skilled, expert, proficient, clever
  adjective (masculine)

पार्थः (pārthaḥ) - Pārtha (Arjuna) (son of Pṛthā, Arjuna)

(proper noun)

Nominative, masculine, singular of pārtha

pārtha - son of Pṛthā (Kuntī), Arjuna, Yudhiṣṭhira, Bhīmasena

Patronymic from `Pṛthā` + `aṇ` suffix.

Note: Subject of `jagau`.

वाक्य-अर्थ-तत्त्वज्ञः (vākya-artha-tattvajñaḥ) - who understood the true meaning of sentences (one who knows the essence of sentence meanings)

(adjective)

Nominative, masculine, singular of vākya-artha-tattvajña

vākya-artha-tattvajña - one who knows the essence of sentence meanings, expert in logic/hermeneutics

Compound: `vākya` (sentence) + `artha` (meaning) + `tattva` (essence) + `jña` (knower).

Compound type : tatpuruṣa (vākya+artha+tattva+jña)

• vākya – sentence, speech, utterance
  noun (neuter)
  From root `vac` (to speak).
  Root: vac (class 2)
• artha – meaning, sense, purpose
  noun (masculine)
  Root: ṛ
• tattva – truth, reality, essence, principle
  noun (neuter)
  Root: tad
• jña – knower, understanding
  adjective/noun
  agent noun/nominal suffix
  From root `jñā` (to know) + `ka` suffix.
  Root: jñā (class 9)

जगौ (jagau) - he spoke (he spoke, he sang, he said)

(verb)

3rd person , singular, active, perfect (liṭ) of gai

Root `gai` (1st class `gāyati`). Perfect tense form.

Root: gai (class 1)

वाक्यम् (vākyam) - words, speech (speech, words, sentence)

(noun)

Accusative, neuter, singular of vākya

vākya - sentence, speech, utterance, statement

From root `vac` (to speak).

Root: vac (class 2)

अतन्द्रितः (atandritaḥ) - tirelessly, without lassitude (untired, vigilant, tireless, without lassitude)

(adjective)

Nominative, masculine, singular of atandrita

atandrita - untired, vigilant, alert, without lassitude, not weary

Negative prefix `a` + `tandrita` (weary, sluggish).

Compound type : nañ-tatpuruṣa (a+tandrita)

• a – not, un-
  prefix/indeclinable
  Negative prefix.
• tandrita – weary, sluggish, indolent
  adjective
  Past Passive Participle
  From root `tandr` (to be weary).
  Root: tandr (class 10)