महाभारतः mahābhārataḥ - book-2, chapter-11, verse-3

अप्रमेयप्रभां दिव्यां मानसीं भरतर्षभ ।
अनिर्देश्यां प्रभावेन सर्वभूतमनोरमाम् ॥३॥

3. aprameyaprabhāṁ divyāṁ mānasīṁ bharatarṣabha ,
anirdeśyāṁ prabhāvena sarvabhūtamanoramām.

3. aprameyaprabhām divyām mānasīm bharatarṣabha
anirdeśyām prabhāvena sarvabhūtamanoramām

3. O best among the Bhāratas (bharatarṣabha), that assembly had immeasurable splendor, was divine, and was created by mind (mānasī). It was indescribable in its power and charming to all beings.

Words meanings summery:

• अप्रमेयप्रभाम् (aprameyaprabhām) - having immeasurable splendor/lustre

• दिव्याम् (divyām) - divine, celestial, heavenly

• मानसीम् (mānasīm) - mental, belonging to the mind, created by mind

• भरतर्षभ (bharatarṣabha) - O best of the Bhāratas

• अनिर्देश्याम् (anirdeśyām) - indescribable, inexpressible

• प्रभावेन (prabhāvena) - by power, by glory, by might

• सर्वभूतमनोरमाम् (sarvabhūtamanoramām) - charming to all beings, delighting all creatures

Words meanings and morphology

अप्रमेयप्रभाम् (aprameyaprabhām) - having immeasurable splendor/lustre

(adjective)

Accusative, feminine, singular of aprameyaprabhā

aprameyaprabhā - having immeasurable splendor

Compound type : bahuvrīhi (aprameya+prabhā)

• aprameya – immeasurable, inconceivable
  adjective (masculine)
  Gerundive/Future Passive Participle
  Derived from root mā (to measure) with prefix a- (negation) and suffix -eya
  Prefix: a-
  Root: mā (class 3)
• prabhā – light, splendor, radiance
  noun (feminine)
  Prefix: pra

Note: Modifies sabhām.

दिव्याम् (divyām) - divine, celestial, heavenly

(adjective)

Accusative, feminine, singular of divyā

divya - divine, celestial, heavenly

Note: Modifies sabhām.

मानसीम् (mānasīm) - mental, belonging to the mind, created by mind

(adjective)

Accusative, feminine, singular of mānasī

mānasī - mental, spiritual, relating to the mind

Derived from manas (mind)

Note: Modifies sabhām.

भरतर्षभ (bharatarṣabha) - O best of the Bhāratas

(proper noun)

Vocative, masculine, singular of bharatarṣabha

bharatarṣabha - bull among Bharatas, chief of the Bharatas

Compound type : tatpuruṣa (bharata+ṛṣabha)

• bharata – a descendant of Bharata, a king
  proper noun (masculine)
• ṛṣabha – bull, chief, best
  noun (masculine)

Note: Refers to Yudhiṣṭhira.

अनिर्देश्याम् (anirdeśyām) - indescribable, inexpressible

(adjective)

Accusative, feminine, singular of anirdeśyā

anirdeśya - indescribable, inexpressible

Gerundive/Future Passive Participle

Derived from root diś (to point out, show) with upasargas ni, r and negative prefix a-

Prefixes: a-+ni+r

Root: diś (class 6)

Note: Modifies sabhām.

प्रभावेन (prabhāvena) - by power, by glory, by might

(noun)

Instrumental, masculine, singular of prabhāva

prabhāva - power, might, influence, glory

Prefix: pra

Root: bhū (class 1)

Note: Qualifies "indescribable".

सर्वभूतमनोरमाम् (sarvabhūtamanoramām) - charming to all beings, delighting all creatures

(adjective)

Accusative, feminine, singular of sarvabhūtamanoramā

sarvabhūtamanoramā - charming to all beings

Compound type : tatpuruṣa (sarvabhūta+manoramā)

• sarvabhūta – all beings, all creatures
  noun (neuter)
• manorama – charming, delightful, pleasing to the mind
  adjective (masculine)

Note: Modifies sabhām.