महाभारतः mahābhārataḥ - book-12, chapter-310, verse-29

तद्भावभावी तद्बुद्धिस्तदात्मा तदपाश्रयः ।
तेजसावृत्य लोकांस्त्रीन्यशः प्राप्स्यति केवलम् ॥२९॥

29. tadbhāvabhāvī tadbuddhistadātmā tadapāśrayaḥ ,
tejasāvṛtya lokāṁstrīnyaśaḥ prāpsyati kevalam.

29. tatbhāvabhāvī tatbuddhiḥ tatātmā tatapāśrayaḥ |
tejasā āvṛtya lokān trīn yaśaḥ prāpsyati kevalam

29. saḥ tatbhāvabhāvī tatbuddhiḥ tatātmā tatapāśrayaḥ (bhaviṣyati)
tejasā trīn lokān āvṛtya (saḥ) kevalam yaśaḥ prāpsyati

29. He will be imbued with that (pure) state of being, possess that (pure) intellect, be identified with that (pure) self (ātman), and be devoted to that (pure source). Encompassing the three worlds with his radiance, he will attain unparalleled glory.

Words meanings summery:

• तत्भावभावी (tatbhāvabhāvī) - imbued with that (pure) state of being (having that nature, being of that disposition)

• तत्बुद्धिः (tatbuddhiḥ) - possess that (pure) intellect (whose intellect is that, having that intellect)

• ततात्मा (tatātmā) - identified with that (pure) self (ātman) (whose self is that, identified with that)

• ततपाश्रयः (tatapāśrayaḥ) - devoted to that (pure source) (whose refuge is that, relying on that)

• तेजसा (tejasā) - by radiance, by brilliance, by energy

• आवृत्य (āvṛtya) - having encompassed, having covered, having enveloped

• लोकान् (lokān) - worlds

• त्रीन् (trīn) - three

• यशः (yaśaḥ) - fame, glory, renown

• प्राप्स्यति (prāpsyati) - will obtain, will attain, will reach

• केवलम् (kevalam) - unique, sole, unparalleled, pure

Words meanings and morphology

तत्भावभावी (tatbhāvabhāvī) - imbued with that (pure) state of being (having that nature, being of that disposition)

(adjective)

Nominative, masculine, singular of tadbhāvabhāvin

tadbhāvabhāvin - becoming like that, being of that nature

Compound tat (that) + bhāva (nature) + bhāvin (being, becoming). bhāvin is derived from bhū by ṇvin.

Compound type : tatpuruṣa (tad+bhāva+bhāvin)

• tad – that
  pronoun (neuter)
• bhāva – state of being, nature, disposition
  noun (masculine)
  From root bhū.
  Root: bhū (class 1)
• bhāvin – being, becoming, future
  adjective (masculine)
  From root bhū with suffix vin.
  Root: bhū (class 1)

Note: Refers to the son, implying he will be like the pure elements.

तत्बुद्धिः (tatbuddhiḥ) - possess that (pure) intellect (whose intellect is that, having that intellect)

(adjective)

Nominative, masculine, singular of tadbuddhi

tadbuddhi - whose intellect is fixed on that, having that intellect

Bahuvrihi compound tat (that) + buddhi (intellect).

Compound type : bahuvrīhi (tad+buddhi)

• tad – that
  pronoun (neuter)
• buddhi – intellect, understanding
  noun (feminine)
  From root budh.
  Root: budh (class 1)

Note: Refers to the son.

ततात्मा (tatātmā) - identified with that (pure) self (ātman) (whose self is that, identified with that)

(adjective)

Nominative, masculine, singular of tadātman

tadātman - whose essence is that, identified with that (ātman)

Bahuvrihi compound tat (that) + ātman (self).

Compound type : bahuvrīhi (tad+ātman)

• tad – that
  pronoun (neuter)
• ātman – self, soul, essence (ātman)
  noun (masculine)
  Root: an (class 2)

Note: Refers to the son, meaning his very essence will be pure.

ततपाश्रयः (tatapāśrayaḥ) - devoted to that (pure source) (whose refuge is that, relying on that)

(adjective)

Nominative, masculine, singular of tadapāśraya

tadapāśraya - relying on that, whose refuge is that

Bahuvrihi compound tat (that) + apāśraya (refuge, reliance).

Compound type : bahuvrīhi (tad+apāśraya)

• tad – that
  pronoun (neuter)
• apāśraya – refuge, support, dependence
  noun (masculine)
  From apā-śrī.
  Prefix: apā
  Root: śrī (class 1)

Note: Refers to the son.

तेजसा (tejasā) - by radiance, by brilliance, by energy

(noun)

Instrumental, neuter, singular of tejas

tejas - radiance, brilliance, energy, power

Root: tij (class 6)

आवृत्य (āvṛtya) - having encompassed, having covered, having enveloped

(indeclinable)

Absolutive (Gerund)

From root vṛ (to cover) with prefix ā.

Prefix: ā

Root: vṛ (class 5)

Note: Compound of prefix and root.

लोकान् (lokān) - worlds

(noun)

Accusative, masculine, plural of loka

loka - world, region, people

Root: lok (class 10)

Note: Object of āvṛtya.

त्रीन् (trīn) - three

(numeral)

Note: Adjective for lokān.

यशः (yaśaḥ) - fame, glory, renown

(noun)

Accusative, neuter, singular of yaśas

yaśas - fame, glory, renown

Note: Object of prāpsyati.

प्राप्स्यति (prāpsyati) - will obtain, will attain, will reach

(verb)

3rd person , singular, active, future (lṛṭ) of prāp

Future Tense

From root āp (to obtain) with prefix pra. 3rd singular future active.

Prefix: pra

Root: āp (class 5)

केवलम् (kevalam) - unique, sole, unparalleled, pure

(adjective)

Accusative, neuter, singular of kevala

kevala - entire, sole, exclusive, pure

Note: Adjective for yaśaḥ.