महाभारतः mahābhārataḥ - book-2, chapter-20, verse-26

क्षत्रियस्यैतदेवाहुर्धर्म्यं कृष्णोपजीवनम् ।
विक्रम्य वशमानीय कामतो यत्समाचरेत् ॥२६॥

26. kṣatriyasyaitadevāhurdharmyaṁ kṛṣṇopajīvanam ,
vikramya vaśamānīya kāmato yatsamācaret.

26. kṣatriyasya etat eva āhuḥ dharmyam kṛṣṇopajīvanam
vikramya vaśam ānīya kāmataḥ yat samācaret

26. They say that for a kṣatriya, this alone is the righteous (dharmya) way of life for a warrior: to act as one desires after displaying valor and bringing others under control.

Words meanings summery:

• क्षत्रियस्य (kṣatriyasya) - of a kṣatriya

• एतत् (etat) - this

• एव (eva) - indeed, only, just

• आहुः (āhuḥ) - they say

• धर्म्यम् (dharmyam) - righteous, lawful, consistent with natural law (dharma)

• कृष्णोपजीवनम् (kṛṣṇopajīvanam) - way of life of a warrior, living by warfare

• विक्रम्य (vikramya) - having displayed valor, having overcome

• वशम् (vaśam) - under control, power

• आनीय (ānīya) - having brought, having led

• कामतः (kāmataḥ) - according to one's desire, willingly

• यत् (yat) - that which, what

• समाचरेत् (samācaret) - one should do, one should perform

Words meanings and morphology

क्षत्रियस्य (kṣatriyasya) - of a kṣatriya

(noun)

Genitive, masculine, singular of kṣatriya

kṣatriya - a member of the warrior class, a kṣatriya

एतत् (etat) - this

(pronoun)

Nominative, neuter, singular of etad

etad - this

Demonstrative pronoun.

एव (eva) - indeed, only, just

(indeclinable)

Emphatic particle.

आहुः (āhuḥ) - they say

(verb)

3rd person , plural, active, perfect (used as present) (liṭ) of brū

Root brū (2nd class), form 'āhuḥ' is an irregular perfect 3rd plural, often used with present meaning for general statements.

Root: brū (class 2)

धर्म्यम् (dharmyam) - righteous, lawful, consistent with natural law (dharma)

(adjective)

Nominative, neuter, singular of dharmya

dharmya - righteous, just, lawful, consistent with natural law (dharma)

Derived from "dharma" with suffix "ya" meaning 'related to' or 'fit for'.

कृष्णोपजीवनम् (kṛṣṇopajīvanam) - way of life of a warrior, living by warfare

(noun)

Nominative, neuter, singular of kṛṣṇopajīvana

kṛṣṇopajīvana - living by battle/warfare, warrior's livelihood, livelihood from Kṛṣṇa (less common interpretation in this context)

'kṛṣṇa' (here meaning war/battle, possibly derived from root kṛṣ 'to draw/drag' referring to drawing weapons or battle lines) + 'upajīvana' (livelihood).

Compound type : tatpurusha (kṛṣṇa+upajīvana)

• kṛṣṇa – black, dark, war, battle
  noun (masculine)
  Can mean 'battle' in some contexts, possibly from 'kṛṣ' (to plough, to drag, to fight).
  Root: kṛṣ (class 1)
• upajīvana – livelihood, subsistence, way of living
  noun (neuter)
  From upa-jīv (to live upon, subsist by).
  Prefix: upa
  Root: jīv (class 1)

विक्रम्य (vikramya) - having displayed valor, having overcome

(indeclinable)

Absolutive/Gerund

From vi-kram (to step, go), with suffix 'ya'.

Prefix: vi

Root: kram (class 1)

वशम् (vaśam) - under control, power

(noun)

Accusative, masculine, singular of vaśa

vaśa - will, power, control, authority

Root: vaś (class 1)

Note: Used adverbially with 'ānīya' meaning 'bringing into one's power/control'.

आनीय (ānīya) - having brought, having led

(indeclinable)

Absolutive/Gerund

From ā-nī (to bring) with suffix 'ya'.

Prefix: ā

Root: nī (class 1)

कामतः (kāmataḥ) - according to one's desire, willingly

(indeclinable)

Derived from 'kāma' (desire) with suffix 'tas' (adverbial).

यत् (yat) - that which, what

(pronoun)

Nominative, neuter, singular of yad

yad - who, which, what

Relative pronoun, here used as neuter singular nominative/accusative.

समाचरेत् (samācaret) - one should do, one should perform

(verb)

3rd person , singular, active, optative (vidhiliṅ) of car

From sam-ā-car (to behave, perform completely). Optative mood, 3rd person singular, active voice (parasmaipada).

Prefixes: sam+ā

Root: car (class 1)