महाभारतः mahābhārataḥ - book-3, chapter-132, verse-4

विदेहराजस्य महीपतेस्तौ विप्रावुभौ मातुलभागिनेयौ ।
प्रविश्य यज्ञायतनं विवादे बन्दिं निजग्राहतुरप्रमेयम् ॥४॥

4. videharājasya mahīpatestau; viprāvubhau mātulabhāgineyau ,
praviśya yajñāyatanaṁ vivāde; bandiṁ nijagrāhaturaprameyam.

4. videharājasya mahīpateḥ tau viprau ubhau mātulabhāgineyau
praviśya yajñāyatanam vivāde bandim nijagrāhatuḥ aprameyam

4. Those two brahmins, the uncle and nephew, having entered the sacrificial arena (yajña) of the King of Videha, the ruler of the earth, defeated the unrivaled Bandi in a debate.

Words meanings summery:

• विदेहराजस्य (videharājasya) - of the King of Videha

• महीपतेः (mahīpateḥ) - Of the ruler of the earth (referring to the King of Videha) (of the lord of the earth, of the king)

• तौ (tau) - Those two (Aṣṭāvakra and Śvetaketu) (those two, they two)

• विप्रौ (viprau) - two brahmins

• उभौ (ubhau) - both

• मातुलभागिनेयौ (mātulabhāgineyau) - The pair of maternal uncle and nephew (Aṣṭāvakra and Śvetaketu) (uncle and nephew (dual))

• प्रविश्य (praviśya) - having entered, entering

• यज्ञायतनम् (yajñāyatanam) - The hall or arena where the yajña (sacrifice) was performed (sacrificial arena, place of sacrifice)

• विवादे (vivāde) - in the debate, in the dispute

• बन्दिम् (bandim) - The debater Bandi (Bandi)

• निजग्राहतुः (nijagrāhatuḥ) - Aṣṭāvakra and Śvetaketu defeated (Bandi) ((they two) seized, conquered, defeated)

• अप्रमेयम् (aprameyam) - The unrivaled Bandi (immeasurable, unrivaled, incomprehensible)

Words meanings and morphology

विदेहराजस्य (videharājasya) - of the King of Videha

(proper noun)

Genitive, masculine, singular of videharāja

videharāja - King of Videha

Compound type : Tatpuruṣa (videha+rājan)

• videha – Videha (ancient kingdom in India)
  proper noun (masculine)
• rājan – king, ruler
  noun (masculine)

महीपतेः (mahīpateḥ) - Of the ruler of the earth (referring to the King of Videha) (of the lord of the earth, of the king)

(noun)

Genitive, masculine, singular of mahīpati

mahīpati - king, ruler, lord of the earth

Compound type : Tatpuruṣa (mahī+pati)

• mahī – earth, ground
  noun (feminine)
• pati – lord, master, husband
  noun (masculine)

तौ (tau) - Those two (Aṣṭāvakra and Śvetaketu) (those two, they two)

(pronoun)

Nominative, masculine, dual of tad

tad - that, he, she, it

विप्रौ (viprau) - two brahmins

(noun)

Nominative, masculine, dual of vipra

vipra - brahmin, a sage, inspired, learned

उभौ (ubhau) - both

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

मातुलभागिनेयौ (mātulabhāgineyau) - The pair of maternal uncle and nephew (Aṣṭāvakra and Śvetaketu) (uncle and nephew (dual))

(noun)

Nominative, masculine, dual of mātulabhāgineya

mātulabhāgineya - maternal uncle and nephew

Compound type : Dvandva (mātula+bhāgineya)

• mātula – maternal uncle
  noun (masculine)
• bhāgineya – nephew, sister's son
  noun (masculine)

प्रविश्य (praviśya) - having entered, entering

(indeclinable)

Absolutive (Gerund)

Derived from root viś (to enter) with upasarga pra

Prefix: pra

Root: viś (class 6)

यज्ञायतनम् (yajñāyatanam) - The hall or arena where the yajña (sacrifice) was performed (sacrificial arena, place of sacrifice)

(noun)

Accusative, neuter, singular of yajñāyatana

yajñāyatana - place of sacrifice, sacrificial ground

Compound type : Tatpuruṣa (yajña+āyatana)

• yajña – sacrifice, ritual, worship (yajña)
  noun (masculine)
  Root: yaj
• āyatana – place, abode, seat, hall
  noun (neuter)
  Prefix: ā
  Root: yat

विवादे (vivāde) - in the debate, in the dispute

(noun)

Locative, masculine, singular of vivāda

vivāda - dispute, controversy, debate, contention

Root: vad

बन्दिम् (bandim) - The debater Bandi (Bandi)

(proper noun)

Accusative, masculine, singular of bandi

bandi - Bandi (proper name); a bard, encomiast

निजग्राहतुः (nijagrāhatuḥ) - Aṣṭāvakra and Śvetaketu defeated (Bandi) ((they two) seized, conquered, defeated)

(verb)

3rd person , dual, active, perfect (lit) of grah

Perfect tense (lit) 3rd person dual active

Prefix: ni

Root: grah (class 9)

अप्रमेयम् (aprameyam) - The unrivaled Bandi (immeasurable, unrivaled, incomprehensible)

(adjective)

Accusative, masculine, singular of aprameya

aprameya - immeasurable, unlimited, unknowable, incomprehensible

Compound type : Nañ-Tatpuruṣa (a+prameya)

• a – not, non-, un-
  indeclinable
• prameya – knowable, measurable, perceptible, demonstrable
  adjective (neuter)
  Gerundive (Pot. Pass. Part.)
  Derived from root mā (to measure) with upasarga pra
  Prefix: pra
  Root: mā (class 2)

Note: Modifies 'bandim'.