महाभारतः mahābhārataḥ - book-9, chapter-46, verse-13

लोकालोकविनाशे च प्रादुर्भूते तदानघ ।
उपतस्थुर्महात्मानं सर्वलोकपितामहम् ॥१३॥

13. lokālokavināśe ca prādurbhūte tadānagha ,
upatasthurmahātmānaṁ sarvalokapitāmaham.

13. lokālokavināśe ca prādurbhūte tadā anagha
upatasthuḥ mahātmānam sarvalokapitāmaham

13. anagha tadā lokālokavināśe ca prādurbhūte
mahātmānam sarvalokapitāmaham upatasthuḥ

13. Then, O sinless one, when the destruction of the Lokāloka mountain appeared, they approached the great-souled (mahātman) grandfather of all worlds.

Words meanings summery:

• लोकालोकविनाशे (lokālokavināśe) - at the destruction of Lokāloka (a mythical mountain range)

• च (ca) - and, also

• प्रादुर्भूते (prādurbhūte) - when it appeared, when it manifested

• तदा (tadā) - then, at that time

• अनघ (anagha) - O sinless one

• उपतस्थुः (upatasthuḥ) - they approached, they stood near

• महात्मानम् (mahātmānam) - the great-souled (ātman) Brahmā (the great-souled one, the noble one)

• सर्वलोकपितामहम् (sarvalokapitāmaham) - Brahmā, the grandfather of all worlds (the grandfather of all worlds)

Words meanings and morphology

लोकालोकविनाशे (lokālokavināśe) - at the destruction of Lokāloka (a mythical mountain range)

(noun)

Locative, masculine, singular of lokālokavināśa

lokālokavināśa - destruction of Lokāloka

Compound type : tatpuruṣa (lokāloka+vināśa)

• lokāloka – Lokāloka, a mythical mountain range separating the visible world from the region of darkness
  noun (masculine)
• vināśa – destruction, annihilation, ruin
  noun (masculine)
  Prefix: vi
  Root: naś (class 4)

च (ca) - and, also

(indeclinable)

प्रादुर्भूते (prādurbhūte) - when it appeared, when it manifested

(adjective)

Locative, masculine, singular of prādurbhūta

prādurbhūta - appeared, manifested, arisen, become visible

Past Passive Participle

Derived from √bhū (to be, to become) with prefix prādur.

Prefix: prādur

Root: bhū (class 1)

Note: Used as part of a locative absolute construction, agreeing with 'lokālokavināśe'.

तदा (tadā) - then, at that time

(indeclinable)

अनघ (anagha) - O sinless one

(adjective)

Vocative, masculine, singular of anagha

anagha - sinless, faultless, pure; O sinless one

Compound of 'a-' (negative prefix) and 'agha' (sin).

Compound type : prādi-samāsa (a+agha)

• a – not, un-, without
  indeclinable
  Negative prefix
• agha – sin, evil, misfortune
  noun (neuter)

Note: Addressing the listener (Vaiśampāyana by Janamejaya or vice versa in broader context).

उपतस्थुः (upatasthuḥ) - they approached, they stood near

(verb)

3rd person , plural, active, perfect (lit) of upatasthā

Perfect tense, 3rd person plural

From √sthā with prefix 'upa'.

Prefix: upa

Root: sthā (class 1)

Note: Subject 'they' is implied, referring to the gods.

महात्मानम् (mahātmānam) - the great-souled (ātman) Brahmā (the great-souled one, the noble one)

(noun)

Accusative, masculine, singular of mahātman

mahātman - great-souled, noble, a great being; the supreme (ātman)

Compound of 'mahā' (great) and 'ātman' (soul, self).

Compound type : karmadhāraya (mahā+ātman)

• mahā – great, large, mighty
  adjective
• ātman – self, soul, spirit, essence
  noun (masculine)
  Root: an (class 2)

Note: Refers to Brahmā.

सर्वलोकपितामहम् (sarvalokapitāmaham) - Brahmā, the grandfather of all worlds (the grandfather of all worlds)

(noun)

Accusative, masculine, singular of sarvalokapitāmaha

sarvalokapitāmaha - the grandfather of all worlds, a title for Brahmā

Compound of 'sarva' (all), 'loka' (world), and 'pitāmaha' (grandfather).

Compound type : tatpuruṣa (sarva+loka+pitāmaha)

• sarva – all, every, whole
  adjective
• loka – world, realm, people
  noun (masculine)
  Root: lok (class 1)
• pitāmaha – paternal grandfather; a title for Brahmā
  noun (masculine)

Note: Refers to Brahmā, the creator god.