महाभारतः mahābhārataḥ - book-13, chapter-115, verse-8

पूर्वं तु मनसा त्यक्त्वा तथा वाचाथ कर्मणा ।
त्रिकारणं तु निर्दिष्टं श्रूयते ब्रह्मवादिभिः ॥८॥

8. pūrvaṁ tu manasā tyaktvā tathā vācātha karmaṇā ,
trikāraṇaṁ tu nirdiṣṭaṁ śrūyate brahmavādibhiḥ.

8. pūrvam tu manasā tyaktvā tathā vācā atha karmaṇā
trikāraṇam tu nirdiṣṭam śrūyate brahmavādibhiḥ

8. pūrvam manasā tyaktvā,
tathā vācā atha karmaṇā [ca],
trikāraṇam tu nirdiṣṭam [iti] brahmavādibhiḥ śrūyate.

8. Having first relinquished by the mind, and similarly by speech and then by action (karma), this 'triple cause' (trikāraṇa) is indeed declared; it is heard among those who speak of the Absolute (brahman).

Words meanings summery:

• पूर्वम् (pūrvam) - first, beforehand (previously, formerly, first)

• तु (tu) - indeed (but, indeed, however)

• मनसा (manasā) - by the mind (by mind, by thought, by intellect)

• त्यक्त्वा (tyaktvā) - having relinquished (having abandoned, having forsaken, having left)

• तथा (tathā) - similarly, in the same way (thus, so, in that manner, similarly)

• वाचा (vācā) - by speech (by speech, by word, by voice)

• अथ (atha) - and then (then, now, and, moreover)

• कर्मणा (karmaṇā) - by action (karma) (by action, by ritual, by fate)

• त्रिकारणम् (trikāraṇam) - this 'triple cause' (trikāraṇa) (the triple cause, three causes)

• तु (tu) - indeed (but, indeed, however)

• निर्दिष्टम् (nirdiṣṭam) - declared, designated (declared, designated, indicated, instructed)

• श्रूयते (śrūyate) - is heard (is heard, is learned, is perceived)

• ब्रह्मवादिभिः (brahmavādibhiḥ) - by those who speak of the Absolute (brahman) (by those who speak of sacred knowledge, by theologians, by expounders of `brahman`)

Words meanings and morphology

पूर्वम् (pūrvam) - first, beforehand (previously, formerly, first)

(indeclinable)

Adverbial usage (accusative singular neuter).

Root: pṝ

Note: Used adverbially.

तु (tu) - indeed (but, indeed, however)

(indeclinable)

Conjunction/particle.

मनसा (manasā) - by the mind (by mind, by thought, by intellect)

(noun)

Instrumental, neuter, singular of manas

manas - mind, intellect, understanding, thought, intention

Root: man (class 4)

त्यक्त्वा (tyaktvā) - having relinquished (having abandoned, having forsaken, having left)

(indeclinable)

Absolutive (gerund)

Formed with suffix -tvā.

Root: tyaj (class 1)

Note: An indeclinable participle.

तथा (tathā) - similarly, in the same way (thus, so, in that manner, similarly)

(indeclinable)

Adverb.

वाचा (vācā) - by speech (by speech, by word, by voice)

(noun)

Instrumental, feminine, singular of vāc

vāc - speech, voice, word, language

Root: vac (class 2)

अथ (atha) - and then (then, now, and, moreover)

(indeclinable)

Particle indicating sequence or transition.

कर्मणा (karmaṇā) - by action (karma) (by action, by ritual, by fate)

(noun)

Instrumental, neuter, singular of karman

karman - action, deed, ritual, fate, duty

Root: kṛ (class 8)

त्रिकारणम् (trikāraṇam) - this 'triple cause' (trikāraṇa) (the triple cause, three causes)

(noun)

Nominative, neuter, singular of trikāraṇa

trikāraṇa - having three causes; the triple cause (mind, speech, body/action)

compound

Compound type : Dvigu (tri+kāraṇa)

• tri – three
  numeral
• kāraṇa – cause, reason, instrument
  noun (neuter)
  Formed from root kṛ with suffix -ana.
  Root: kṛ (class 8)

Note: Can also be accusative here, functioning as the subject of `nirdiṣṭam` as a neuter noun.

तु (tu) - indeed (but, indeed, however)

(indeclinable)

Conjunction/particle.

निर्दिष्टम् (nirdiṣṭam) - declared, designated (declared, designated, indicated, instructed)

(adjective)

Nominative, neuter, singular of nirdiṣṭa

nirdiṣṭa - designated, declared, indicated, taught, ordered

Past Passive Participle

From √diś with prefix nir-.

Prefix: nis

Root: diś (class 6)

Note: Can also function as an adjective here agreeing with trikāraṇam.

श्रूयते (śrūyate) - is heard (is heard, is learned, is perceived)

(verb)

3rd person , singular, passive, present (laṭ) of śru

Present Middle Passive

From √śru (5th class) with passive suffix -ya and middle ending -te.

Root: śru (class 5)

Note: The active form would be `śṛṇoti`.

ब्रह्मवादिभिः (brahmavādibhiḥ) - by those who speak of the Absolute (brahman) (by those who speak of sacred knowledge, by theologians, by expounders of `brahman`)

(noun)

Instrumental, masculine, plural of brahmavādin

brahmavādin - speaking of the Veda, expounding sacred knowledge, speaking of `brahman`, a theologian

Compound of `brahman` and `vādin`.

Compound type : Tatpurusha (brahman+vādin)

• brahman – Absolute reality, sacred word, Veda, prayer
  noun (neuter)
  Root: bṛh (class 1)
• vādin – speaking, expounding, proclaiming
  adjective (masculine)
  Agent noun / Nomen agentis
  From √vad with suffix -in.
  Root: vad (class 1)