महाभारतः mahābhārataḥ - book-12, chapter-255, verse-15

कर्तव्यमिति कर्तव्यं वेत्ति यो ब्राह्मणोभयम् ।
ब्रह्मैव वर्तते लोके नैति कर्तव्यतां पुनः ॥१५॥

15. kartavyamiti kartavyaṁ vetti yo brāhmaṇobhayam ,
brahmaiva vartate loke naiti kartavyatāṁ punaḥ.

15. kartavyam iti kartavyam vetti yaḥ brāhmaṇaḥ ubhayam
| brahma eva vartate loke na eti kartavyatām punaḥ

15. yaḥ brāhmaṇaḥ kartavyam iti kartavyam ubhayam vetti,
(saḥ) loke brahma eva vartate,
punaḥ kartavyatām na eti

15. That Brahmin who truly comprehends the intrinsic nature of duty (kartavya) and its twofold aspect (ubhayam), he abides in the world as Brahman (brahman) itself and does not again return to the state of having to perform duties.

Words meanings summery:

• कर्तव्यम् (kartavyam) - the intrinsic nature of duty (kartavya) (what is to be done, duty, obligation)

• इति (iti) - marking a concept, 'as' (thus, so, this is)

• कर्तव्यम् (kartavyam) - duty itself, duty for duty's sake (what is to be done, duty, obligation)

• वेत्ति (vetti) - he knows, he understands

• यः (yaḥ) - who, which

• ब्राह्मणः (brāhmaṇaḥ) - a Brahmin, a member of the priestly class

• उभयम् (ubhayam) - both aspects or types of duty (both, of both kinds)

• ब्रह्म (brahma) - the ultimate reality (brahman) (Brahman, the Absolute Reality)

• एव (eva) - only, indeed, certainly

• वर्तते (vartate) - he abides or lives (he exists, he dwells, he behaves, he turns)

• लोके (loke) - in the world, in the realm

• न (na) - not, no

• एति (eti) - he does not return (he goes, he comes, he attains)

• कर्तव्यताम् (kartavyatām) - to the necessity of performing actions (karma) as duty (to the state of being a duty, to the condition of duty)

• पुनः (punaḥ) - again, once more, anew

Words meanings and morphology

कर्तव्यम् (kartavyam) - the intrinsic nature of duty (kartavya) (what is to be done, duty, obligation)

(adjective)

Nominative, neuter, singular of kartavya

kartavya - to be done, proper to be done, duty, obligation

Gerundive

Derived from root kṛ, meaning 'to do'

Root: kṛ (class 8)

इति (iti) - marking a concept, 'as' (thus, so, this is)

(indeclinable)

कर्तव्यम् (kartavyam) - duty itself, duty for duty's sake (what is to be done, duty, obligation)

(adjective)

Nominative, neuter, singular of kartavya

kartavya - to be done, proper to be done, duty, obligation

Gerundive

Derived from root kṛ, meaning 'to do'

Root: kṛ (class 8)

वेत्ति (vetti) - he knows, he understands

(verb)

3rd person , singular, active, present (Laṭ) of vid

Root: vid (class 2)

यः (yaḥ) - who, which

(pronoun)

Nominative, masculine, singular of yad

yad - who, which, what

ब्राह्मणः (brāhmaṇaḥ) - a Brahmin, a member of the priestly class

(noun)

Nominative, masculine, singular of brāhmaṇa

brāhmaṇa - a Brahmin, one belonging to the priestly class, related to Brahman

उभयम् (ubhayam) - both aspects or types of duty (both, of both kinds)

(pronoun)

Accusative, neuter, singular of ubhaya

ubhaya - both, of both kinds, twofold

ब्रह्म (brahma) - the ultimate reality (brahman) (Brahman, the Absolute Reality)

(noun)

Nominative, neuter, singular of brahman

brahman - the Absolute Reality, ultimate truth, the highest self, sacred word

Root: bṛh (class 1)

एव (eva) - only, indeed, certainly

(indeclinable)

वर्तते (vartate) - he abides or lives (he exists, he dwells, he behaves, he turns)

(verb)

3rd person , singular, middle, present (Laṭ) of vṛt

Root: vṛt (class 1)

लोके (loke) - in the world, in the realm

(noun)

Locative, masculine, singular of loka

loka - world, realm, region, people

Root: lok (class 1)

न (na) - not, no

(indeclinable)

एति (eti) - he does not return (he goes, he comes, he attains)

(verb)

3rd person , singular, active, present (Laṭ) of i

Root: i (class 2)

कर्तव्यताम् (kartavyatām) - to the necessity of performing actions (karma) as duty (to the state of being a duty, to the condition of duty)

(noun)

Accusative, feminine, singular of kartavyatā

kartavyatā - the state of being a duty, obligatoriness, duty, necessity of action

Derived from kartavya with suffix -tā

पुनः (punaḥ) - again, once more, anew

(indeclinable)