महाभारतः mahābhārataḥ - book-13, chapter-129, verse-8

यजनं याजनं चैव तथा दानप्रतिग्रहौ ।
अध्यापनमधीतं च षट्कर्मा धर्मभाग्द्विजः ॥८॥

8. yajanaṁ yājanaṁ caiva tathā dānapratigrahau ,
adhyāpanamadhītaṁ ca ṣaṭkarmā dharmabhāgdvijaḥ.

8. yajanam yājanam ca eva tathā dānapratigrahau
adhyāpanam adhītam ca ṣaṭkarmā dharmabhāk dvijaḥ

8. dvijaḥ ṣaṭkarmā dharmabhāk yajanam yājanam ca
eva tathā dānapratigrahau adhyāpanam adhītam ca

8. The six duties are: performing Vedic rituals (yajanam), conducting Vedic rituals for others (yājanam), giving and receiving gifts, teaching, and studying. The twice-born (dvija) thereby upholds his natural law (dharma).

Words meanings summery:

• यजनम् (yajanam) - performing a Vedic ritual (for oneself)

• याजनम् (yājanam) - causing to perform a Vedic ritual (for others), officiating as a priest

• च (ca) - and

• एव (eva) - indeed, only

• तथा (tathā) - thus, similarly

• दानप्रतिग्रहौ (dānapratigrahau) - giving and receiving gifts

• अध्यापनम् (adhyāpanam) - teaching, instructing

• अधीतम् (adhītam) - studying, learning

• च (ca) - and

• षट्कर्मा (ṣaṭkarmā) - having six duties, performing six actions

• धर्मभाक् (dharmabhāk) - upholding natural law, partaking in dharma

• द्विजः (dvijaḥ) - a brahmin, a twice-born person

Words meanings and morphology

यजनम् (yajanam) - performing a Vedic ritual (for oneself)

(noun)

neuter, singular of yajana

yajana - act of worship, Vedic ritual, sacrificing

action noun

from √yaj + ana(ṭ)

Root: √yaj (class 1)

याजनम् (yājanam) - causing to perform a Vedic ritual (for others), officiating as a priest

(noun)

neuter, singular of yājana

yājana - causing to sacrifice/worship, acting as a priest for others

action noun (causative)

from causal √yaj + ana(ṭ)

Root: √yaj (class 1)

च (ca) - and

(indeclinable)

एव (eva) - indeed, only

(indeclinable)

तथा (tathā) - thus, similarly

(indeclinable)

दानप्रतिग्रहौ (dānapratigrahau) - giving and receiving gifts

(noun)

masculine, dual of dānapratigraha

dānapratigraha - giving and receiving

Compound type : dvandva (dāna+pratigraha)

• dāna – giving, gift
  noun (neuter)
  action noun
  from √dā + ana
  Root: √dā (class 3)
• pratigraha – receiving, acceptance
  noun (masculine)
  action noun
  from prati-√grah + a
  Prefix: prati
  Root: √grah (class 9)

अध्यापनम् (adhyāpanam) - teaching, instructing

(noun)

neuter, singular of adhyāpana

adhyāpana - teaching, instructing

action noun (causative)

from adhi-ā-√i (causative) + ana(ṭ)

Prefixes: adhi+ā

Root: √i (class 2)

अधीतम् (adhītam) - studying, learning

(noun)

neuter, singular of adhīta

adhīta - studied, learned

Past Passive Participle (substantivized)

from adhi-√i

Prefix: adhi

Root: √i (class 2)

च (ca) - and

(indeclinable)

षट्कर्मा (ṣaṭkarmā) - having six duties, performing six actions

(adjective)

Nominative, masculine, singular of ṣaṭkarman

ṣaṭkarman - one who has six duties/actions

Compound type : bahuvrīhi (ṣaṣ+karman)

• ṣaṣ – six
  numeral
• karman – action, duty
  noun (neuter)

धर्मभाक् (dharmabhāk) - upholding natural law, partaking in dharma

(adjective)

Nominative, masculine, singular of dharmabhāj

dharmabhāj - partaking of dharma, righteous, following natural law

agent noun

from √bhaj

Compound type : tatpuruṣa (dharma+bhāj)

• dharma – natural law, constitution, duty
  noun (masculine)
• bhāj – partaker, sharing
  adjective (masculine)
  agent noun
  from √bhaj
  Root: √bhaj (class 1)

द्विजः (dvijaḥ) - a brahmin, a twice-born person

(noun)

Nominative, masculine, singular of dvija

dvija - twice-born (a brahmin, kshatriya, or vaishya; typically brahmin in this context)

Compound type : bahuvrīhi (dvi+ja)

• dvi – two
  numeral
• ja – born
  adjective (masculine)
  suffix -ja
  derived from √jan
  Root: √jan (class 4)