महाभारतः mahābhārataḥ - book-3, chapter-33, verse-36

कर्तव्यं त्वेव कर्मेति मनोरेष विनिश्चयः ।
एकान्तेन ह्यनीहोऽयं पराभवति पूरुषः ॥३६॥

36. kartavyaṁ tveva karmeti manoreṣa viniścayaḥ ,
ekāntena hyanīho'yaṁ parābhavati pūruṣaḥ.

36. kartavyaṃ tu eva karma iti manoḥ eṣa viniścayaḥ
| ekāntena hi anīhaḥ ayam parābhavati pūruṣaḥ

36. Action (karma) must certainly be performed—this is Manu's firm conclusion. Indeed, a person (puruṣa) who is entirely inactive is defeated.

Words meanings summery:

• कर्तव्यम् (kartavyam) - that which should be done, duty, obligation

• तु (tu) - but, indeed, however

• एव (eva) - even, indeed, only, certainly

• कर्म (karma) - action, deed, work, ritual

• इति (iti) - marker for direct speech/thought (thus, so, in this way)

• मनोः (manoḥ) - of Manu

• एषः (eṣaḥ) - this, he

• विनिश्चयः (viniścayaḥ) - firm decision, resolution, definite conclusion

• एकान्तेन (ekāntena) - exclusively, entirely, absolutely, solitarily, in private

• हि (hi) - indeed, surely, because

• अनीहः (anīhaḥ) - desireless, inactive, without effort

• अयम् (ayam) - this, he

• पराभवति (parābhavati) - he is defeated, he perishes, he fails

• पूरुषः (pūruṣaḥ) - man, person, human being

Words meanings and morphology

कर्तव्यम् (kartavyam) - that which should be done, duty, obligation

(adjective)

Nominative, neuter, singular of kartavya

kartavya - that which should be done, duty, obligation

Gerundive

root kṛ (to do) + tavya (suffix for gerundive)

Root: kṛ (class 8)

तु (tu) - but, indeed, however

(indeclinable)

एव (eva) - even, indeed, only, certainly

(indeclinable)

कर्म (karma) - action, deed, work, ritual

(noun)

Nominative, neuter, singular of karma

karma - action, deed, work, ritual (karma)

Root: kṛ (class 8)

इति (iti) - marker for direct speech/thought (thus, so, in this way)

(indeclinable)

मनोः (manoḥ) - of Manu

(proper noun)

Genitive, masculine, singular of manu

manu - Manu (name of the progenitor of mankind and lawgiver)

एषः (eṣaḥ) - this, he

(pronoun)

Nominative, masculine, singular of etad

etad - this, that (demonstrative pronoun)

विनिश्चयः (viniścayaḥ) - firm decision, resolution, definite conclusion

(noun)

Nominative, masculine, singular of viniścaya

viniścaya - firm decision, resolution, definite conclusion

एकान्तेन (ekāntena) - exclusively, entirely, absolutely, solitarily, in private

(adjective)

Instrumental, neuter, singular of ekānta

ekānta - absolute, exclusive, private, solitary

Compound type : Tatpurusha (eka+anta)

• eka – one, single, sole
  numeral
• anta – end, limit, vicinity, proximity
  noun (masculine)

Note: Used adverbially here.

हि (hi) - indeed, surely, because

(indeclinable)

अनीहः (anīhaḥ) - desireless, inactive, without effort

(adjective)

Nominative, masculine, singular of anīha

anīha - desireless, inactive, without effort

Compound type : Nañ-Bahuvrihi (a+īhā)

• a – not, non-
  prefix
• īhā – exertion, effort, desire, wish
  noun (feminine)
  Root: īh (class 1)

अयम् (ayam) - this, he

(pronoun)

Nominative, masculine, singular of idam

idam - this (demonstrative pronoun)

पराभवति (parābhavati) - he is defeated, he perishes, he fails

(verb)

3rd person , singular, active, present indicative (laṭ) of parābhav

Prefix: parā

Root: bhū (class 1)

पूरुषः (pūruṣaḥ) - man, person, human being

(noun)

Nominative, masculine, singular of pūruṣa

pūruṣa - man, person, human being (puruṣa), cosmic being