महाभारतः mahābhārataḥ - book-4, chapter-26, verse-3

नीतिधर्मार्थतत्त्वज्ञं पितृवच्च समाहितम् ।
धर्मे स्थितं सत्यधृतिं ज्येष्ठं ज्येष्ठापचायिनम् ॥३॥

3. nītidharmārthatattvajñaṁ pitṛvacca samāhitam ,
dharme sthitaṁ satyadhṛtiṁ jyeṣṭhaṁ jyeṣṭhāpacāyinam.

3. nīti dharma artha tattvajñam pitṛvat ca samāhitam
dharme sthitam satyadhṛtim jyeṣṭham jyeṣṭhāpacāyinam

3. They are devoted to Dharmarāja (Yudhiṣṭhira), who understands the essence of policy, natural law (dharma), and worldly affairs; who is like a father and self-composed; who is established in (natural) law (dharma) and steadfast in truth; and who is the eldest and honors his elders.

Words meanings summery:

• नीतिधर्मार्थतत्त्वज्ञम् (nītidharmārthatattvajñam) - one who understands the essence of policy, natural law (dharma), and worldly affairs (one who knows the truth of policy, natural law (dharma), and wealth/purpose)

• पितृवत् (pitṛvat) - like a father (like a father, paternal)

• च (ca) - and (and, also)

• समाहितम् (samāhitam) - self-composed (composed, attentive, concentrated, self-controlled)

• धर्मे (dharme) - in (natural) law (dharma) (in natural law (dharma), in duty, in righteousness)

• स्थितम् (sthitam) - established (established, situated, firm, standing)

• सत्यधृतिम् (satyadhṛtim) - steadfast in truth (steadfast in truth, having truth as support)

• ज्येष्ठम् (jyeṣṭham) - the eldest (eldest, chief, superior)

• ज्येष्ठापचायिनम् (jyeṣṭhāpacāyinam) - who honors his elders (one who honors elders/superiors)

Words meanings and morphology

नीतिधर्मार्थतत्त्वज्ञम् (nītidharmārthatattvajñam) - one who understands the essence of policy, natural law (dharma), and worldly affairs (one who knows the truth of policy, natural law (dharma), and wealth/purpose)

(adjective)

Accusative, masculine, singular of nītidharmārthatattvajña

nītidharmārthatattvajña - knower of the truth of policy, natural law, and purpose/wealth

Compound type : tatpuruṣa (nīti+dharma+artha+tattva+jña)

• nīti – policy, conduct, morality, justice
  noun (feminine)
  Root: nī (class 1)
• dharma – natural law, constitution, righteousness, duty
  noun (masculine)
  Root: dhṛ (class 1)
• artha – purpose, meaning, wealth, worldly affairs
  noun (masculine)
• tattva – truth, reality, essence, principle
  noun (neuter)
• jña – knowing, acquainted with
  adjective (masculine)
  Derived from root jñā (to know)
  Root: jñā (class 9)

Note: Refers to Dharmarāja.

पितृवत् (pitṛvat) - like a father (like a father, paternal)

(indeclinable)

Derived from pitṛ with -vat suffix

Note: Qualifies Dharmarāja's nature.

च (ca) - and (and, also)

(indeclinable)

Note: Conjunction.

समाहितम् (samāhitam) - self-composed (composed, attentive, concentrated, self-controlled)

(adjective)

Accusative, masculine, singular of samāhita

samāhita - fixed, composed, attentive, self-controlled, concentrated (in dhyāna or yoga)

Past Passive Participle

From sam-ā-dhā (to collect, compose)

Prefixes: sam+ā

Root: dhā (class 3)

Note: Refers to Dharmarāja.

धर्मे (dharme) - in (natural) law (dharma) (in natural law (dharma), in duty, in righteousness)

(noun)

Locative, masculine, singular of dharma

dharma - natural law, constitution, righteousness, duty, virtue

Root: dhṛ (class 1)

Note: Location for `sthitam`.

स्थितम् (sthitam) - established (established, situated, firm, standing)

(adjective)

Accusative, masculine, singular of sthita

sthita - standing, situated, firm, established

Past Passive Participle

From root sthā (to stand)

Root: sthā (class 1)

Note: Refers to Dharmarāja.

सत्यधृतिम् (satyadhṛtim) - steadfast in truth (steadfast in truth, having truth as support)

(adjective)

Accusative, masculine, singular of satyadhṛti

satyadhṛti - firm in truth, having truth as support or resolve

Compound type : bahuvrīhi (satya+dhṛti)

• satya – truth, true, real
  noun (neuter)
• dhṛti – firmness, constancy, resolve, support
  noun (feminine)
  Root: dhṛ (class 1)

Note: Refers to Dharmarāja.

ज्येष्ठम् (jyeṣṭham) - the eldest (eldest, chief, superior)

(adjective)

Accusative, masculine, singular of jyeṣṭha

jyeṣṭha - eldest, chief, principal, superior

Superlative of vṛddha/praśasya

Note: Refers to Dharmarāja.

ज्येष्ठापचायिनम् (jyeṣṭhāpacāyinam) - who honors his elders (one who honors elders/superiors)

(adjective)

Accusative, masculine, singular of jyeṣṭhāpacāyin

jyeṣṭhāpacāyin - one who honors elders/superiors

Compound type : ṣaṣṭhī-tatpuruṣa (jyeṣṭha+apacāyin)

• jyeṣṭha – eldest, chief, superior
  adjective (masculine)
  Superlative of vṛddha/praśasya
• apacāyin – honoring, worshipping, revering
  adjective (masculine)
  Agent noun from apacāy (to honor)
  Prefix: apa
  Root: ci (class 5)

Note: Refers to Dharmarāja, indicating his respect for his own elders (like Bhīṣma, Droṇa, Vidura).