महाभारतः mahābhārataḥ - book-12, chapter-258, verse-18

तस्मात्पितुर्वचः कार्यं न विचार्यं कथंचन ।
पातकान्यपि पूयन्ते पितुर्वचनकारिणः ॥१८॥

18. tasmātpiturvacaḥ kāryaṁ na vicāryaṁ kathaṁcana ,
pātakānyapi pūyante piturvacanakāriṇaḥ.

18. tasmāt pituḥ vacaḥ kāryam na vicāryam kathaṃcana
pātākani api pūyante pituḥ vacanakāriṇaḥ

18. tasmāt pituḥ vacaḥ kāryam kathaṃcana na vicāryam
pituḥ vacanakāriṇaḥ pātākani api pūyante

18. Therefore, the father's command must be executed and should not be questioned in any way. Even sins are purified for one who obeys the father's word.

Words meanings summery:

• तस्मात् (tasmāt) - therefore, from that, hence

• पितुः (pituḥ) - of the father

• वचः (vacaḥ) - word, speech, command

• कार्यम् (kāryam) - to be done, duty, action

• न (na) - not, no

• विचार्यम् (vicāryam) - to be deliberated, to be questioned, to be considered

• कथंचन (kathaṁcana) - by any means, in any way, somehow

• पाताकनि (pātākani) - sins, sinful acts, immoral deeds

• अपि (api) - even, also, too

• पूयन्ते (pūyante) - are purified, become pure, are cleansed

• पितुः (pituḥ) - of the father

• वचनकारिणः (vacanakāriṇaḥ) - of the one who performs the word/command, of the obedient one

Words meanings and morphology

तस्मात् (tasmāt) - therefore, from that, hence

(pronoun)

Ablative, neuter, singular of tad

tad - that (demonstrative pronoun)

Note: Often used as an indeclinable 'therefore'.

पितुः (pituḥ) - of the father

(noun)

Genitive, masculine, singular of pitṛ

pitṛ - father

Note: Also ablative singular.

वचः (vacaḥ) - word, speech, command

(noun)

Nominative, neuter, singular of vacas

vacas - word, speech, command, saying

From root `vac` (to speak)

Root: vac (class 2)

Note: Also accusative singular neuter.

कार्यम् (kāryam) - to be done, duty, action

(adjective)

Nominative, neuter, singular of kārya

kārya - to be done, duty, action, work

Gerundive

From root `kṛ` (to do) + `ya` (gerundive suffix)

Root: kṛ (class 8)

Note: Can also be accusative singular neuter.

न (na) - not, no

(indeclinable)

विचार्यम् (vicāryam) - to be deliberated, to be questioned, to be considered

(adjective)

Nominative, neuter, singular of vicārya

vicārya - to be deliberated, to be questioned, to be considered

Gerundive

From root `car` (to move) with prefix `vi` + `ā` + `ya` (gerundive suffix)

Prefixes: vi+ā

Root: car (class 1)

Note: Can also be accusative singular neuter.

कथंचन (kathaṁcana) - by any means, in any way, somehow

(indeclinable)

पाताकनि (pātākani) - sins, sinful acts, immoral deeds

(noun)

Nominative, neuter, plural of pātaka

pātaka - sin, sinful act, crime

From root `pat` (to fall) + `ka` (suffix)

Root: pat (class 1)

Note: Can also be accusative plural neuter.

अपि (api) - even, also, too

(indeclinable)

पूयन्ते (pūyante) - are purified, become pure, are cleansed

(verb)

3rd person , plural, passive, present (laṭ) of pū

Root: pū (class 1)

Note: Root `pū` (to purify, cleanse), 3rd class passive.

पितुः (pituḥ) - of the father

(noun)

Genitive, masculine, singular of pitṛ

pitṛ - father

Note: Also ablative singular.

वचनकारिणः (vacanakāriṇaḥ) - of the one who performs the word/command, of the obedient one

(noun)

Genitive, masculine, singular of vacanakārin

vacanakārin - one who performs a command, obedient, agent of a word

Compound type : upapada-tatpuruṣa (vacana+kārin)

• vacana – word, speech, command
  noun (neuter)
  From root `vac` (to speak)
  Root: vac (class 2)
• kārin – doing, performing, causing, agent
  adjective (masculine)
  From root `kṛ` (to do) + `in` (suffix forming agent nouns/adjectives)
  Root: kṛ (class 8)

Note: Also ablative singular.