महाभारतः mahābhārataḥ - book-4, chapter-39, verse-18

पृथिव्यां चतुरन्तायां वर्णो मे दुर्लभः समः ।
करोमि कर्म शुक्लं च तेन मामर्जुनं विदुः ॥१८॥

18. pṛthivyāṁ caturantāyāṁ varṇo me durlabhaḥ samaḥ ,
karomi karma śuklaṁ ca tena māmarjunaṁ viduḥ.

18. pṛthivyām caturantāyām varṇaḥ me durlabhaḥ samaḥ
karomi karma śuklam ca tena mām arjunam viduḥ

18. On this four-cornered earth, a complexion matching mine is rare. Also, I perform pure actions (karma). Therefore, they know me as Arjuna.

Words meanings summery:

• पृथिव्याम् (pṛthivyām) - on the earth

• चतुरन्तायाम् (caturantāyām) - having four ends, all-encompassing

• वर्णः (varṇaḥ) - complexion (color, complexion, caste, renown)

• मे (me) - my, of me

• दुर्लभः (durlabhaḥ) - rare, difficult to obtain

• समः (samaḥ) - equal, similar, even, unparalleled

• करोमि (karomi) - I do, I make, I perform

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

• शुक्लम् (śuklam) - white, bright, pure, clean

• च (ca) - and, also

• तेन (tena) - by that, therefore, on account of that

• माम् (mām) - me

• अर्जुनम् (arjunam) - Arjuna, white, bright, pure

• विदुः (viduḥ) - they know

Words meanings and morphology

पृथिव्याम् (pṛthivyām) - on the earth

(noun)

Locative, feminine, singular of pṛthivī

pṛthivī - earth

चतुरन्तायाम् (caturantāyām) - having four ends, all-encompassing

(adjective)

Locative, feminine, singular of caturanta

caturanta - having four ends/quarters

Compound type : bahuvrīhi (catur+anta)

• catur – four
  adjective
• anta – end, border
  noun (masculine)

Note: modifies pṛthivyām

वर्णः (varṇaḥ) - complexion (color, complexion, caste, renown)

(noun)

Nominative, masculine, singular of varṇa

varṇa - color, complexion, caste, renown

Root: vṛ (class 9)

मे (me) - my, of me

(pronoun)

Genitive, singular of asmad

asmad - I, we

दुर्लभः (durlabhaḥ) - rare, difficult to obtain

(adjective)

Nominative, masculine, singular of durlabha

durlabha - difficult to obtain, rare

from dur + √labh

Compound type : tatpurusha (dur+labha)

• dur – difficult, bad
  indeclinable
• labha – obtaining, gain
  noun (masculine)
  verbal noun
  from √labh (to obtain)
  Root: labh (class 1)

Note: modifies varṇaḥ

समः (samaḥ) - equal, similar, even, unparalleled

(adjective)

Nominative, masculine, singular of sama

sama - equal, similar, even, all

Note: modifies varṇaḥ

करोमि (karomi) - I do, I make, I perform

(verb)

1st person , singular, active, present indicative (laṭ) of kṛ

Root: kṛ (class 8)

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

(noun)

Accusative, neuter, singular of karman

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

from √kṛ (to do)

Root: kṛ (class 8)

शुक्लम् (śuklam) - white, bright, pure, clean

(adjective)

Accusative, neuter, singular of śukla

śukla - white, bright, pure, clean

Root: śuc (class 1)

Note: modifies karma

च (ca) - and, also

(indeclinable)

तेन (tena) - by that, therefore, on account of that

(pronoun)

Instrumental, neuter, singular of tad

tad - that

माम् (mām) - me

(pronoun)

Accusative, singular of asmad

asmad - I, we

अर्जुनम् (arjunam) - Arjuna, white, bright, pure

(proper noun)

Accusative, masculine, singular of arjuna

arjuna - Arjuna, white, bright, pure

Root: ṛj

विदुः (viduḥ) - they know

(verb)

3rd person , plural, active, present indicative (laṭ) of vid

Root: vid (class 2)