महाभारतः mahābhārataḥ - book-12, chapter-269, verse-4

न चक्षुषा न मनसा न वाचा दूषयेदपि ।
न प्रत्यक्षं परोक्षं वा दूषणं व्याहरेत्क्वचित् ॥४॥

4. na cakṣuṣā na manasā na vācā dūṣayedapi ,
na pratyakṣaṁ parokṣaṁ vā dūṣaṇaṁ vyāharetkvacit.

4. na cakṣuṣā na manasā na vācā dūṣayet api na
pratyakṣam parokṣam vā dūṣaṇam vyāharet kvacit

4. cakṣuṣā na manasā na vācā api na dūṣayet
pratyakṣam vā parokṣam dūṣaṇam kvacit na vyāharet

4. One should not defile or criticize with the eye, nor with the mind, nor with speech. One should never utter any defilement, whether directly or indirectly.

Words meanings summery:

• न (na) - not, no

• चक्षुषा (cakṣuṣā) - by the eye, with the eye

• न (na) - not, no

• मनसा (manasā) - by the mind, with the mind

• न (na) - not, no

• वाचा (vācā) - by speech, with speech

• दूषयेत् (dūṣayet) - one should defile, one should corrupt, one should criticize

• अपि (api) - even, also, too

• न (na) - not, no

• प्रत्यक्षम् (pratyakṣam) - direct, visible, perceptible; directly

• परोक्षम् (parokṣam) - indirect, invisible, imperceptible; indirectly

• वा (vā) - or

• दूषणम् (dūṣaṇam) - defilement, fault, criticism

• व्याहरेत् (vyāharet) - one should utter, one should speak

• क्वचित् (kvacit) - never (due to preceding 'na') (anywhere, sometimes, ever, never (with negative))

Words meanings and morphology

न (na) - not, no

(indeclinable)

चक्षुषा (cakṣuṣā) - by the eye, with the eye

(noun)

Instrumental, neuter, singular of cakṣus

cakṣus - eye, sight

न (na) - not, no

(indeclinable)

मनसा (manasā) - by the mind, with the mind

(noun)

Instrumental, neuter, singular of manas

manas - mind, intellect, thought

न (na) - not, no

(indeclinable)

वाचा (vācā) - by speech, with speech

(noun)

Instrumental, feminine, singular of vāc

vāc - speech, voice, word

दूषयेत् (dūṣayet) - one should defile, one should corrupt, one should criticize

(verb)

3rd person , singular, active, optative (vidhi liṅ) of dūṣ

optative mood, third person, singular

root dūṣ (10th class, P)

Root: dūṣ (class 10)

अपि (api) - even, also, too

(indeclinable)

न (na) - not, no

(indeclinable)

प्रत्यक्षम् (pratyakṣam) - direct, visible, perceptible; directly

(adjective)

Accusative, neuter, singular of pratyakṣa

pratyakṣa - direct, visible, perceptible, manifest

Compound type : avyayībhāva (prati+akṣi)

• prati – towards, against, in return
  indeclinable
• akṣi – eye
  noun (neuter)

Note: Adverbial usage

परोक्षम् (parokṣam) - indirect, invisible, imperceptible; indirectly

(adjective)

Accusative, neuter, singular of parokṣa

parokṣa - indirect, invisible, imperceptible, obscure

Compound type : bahuvrīhi (para+akṣi)

• para – other, distant
  adjective
• akṣi – eye
  noun (neuter)

Note: Adverbial usage

वा (vā) - or

(indeclinable)

दूषणम् (dūṣaṇam) - defilement, fault, criticism

(noun)

Accusative, neuter, singular of dūṣaṇa

dūṣaṇa - defilement, fault, criticism, pollution

noun from root dūṣ

Derived from root dūṣ with suffix -ana

Root: dūṣ (class 10)

व्याहरेत् (vyāharet) - one should utter, one should speak

(verb)

3rd person , singular, active, optative (vidhi liṅ) of vyāhṛ

optative mood, third person, singular

root hṛ (1st class, P) with upasargas vi + ā

Prefixes: vi+ā

Root: hṛ (class 1)

क्वचित् (kvacit) - never (due to preceding 'na') (anywhere, sometimes, ever, never (with negative))

(indeclinable)