महाभारतः mahābhārataḥ - book-3, chapter-187, verse-39

यावद्युगानां विप्रर्षे सहस्रपरिवर्तनम् ।
तावत्स्वपिमि विश्वात्मा सर्वलोकपितामहः ॥३९॥

39. yāvadyugānāṁ viprarṣe sahasraparivartanam ,
tāvatsvapimi viśvātmā sarvalokapitāmahaḥ.

39. yāvat yugānām viprarṣe sahasraparivartanam
tāvat svapimi viśvātman sarvalokapitāmahaḥ

39. O Brahmin-sage (viprarṣi), for as long as there is a thousand rotations of the cosmic ages (yuga), so long do I sleep—I who am the universal Self (viśvātman) and the great-grandfather of all worlds (Brahma).

Words meanings summery:

• यावत् (yāvat) - as long as (as long as, as much as, until)

• युगानाम् (yugānām) - of the cosmic ages (yuga) (of the yugas/ages)

• विप्रर्षे (viprarṣe) - O Brahmin-sage (viprarṣi) (O Brahmin-sage)

• सहस्रपरिवर्तनम् (sahasraparivartanam) - a thousand rotations (a thousand revolutions/turnings)

• तावत् (tāvat) - so long (for that duration) (so long, so much, for that duration)

• स्वपिमि (svapimi) - I sleep

• विश्वात्मन् (viśvātman) - the universal Self (viśvātman) (universal Self, universal soul)

• सर्वलोकपितामहः (sarvalokapitāmahaḥ) - the grandfather of all worlds (Brahma) (grandfather of all worlds (Brahma))

Words meanings and morphology

यावत् (yāvat) - as long as (as long as, as much as, until)

(indeclinable)

युगानाम् (yugānām) - of the cosmic ages (yuga) (of the yugas/ages)

(noun)

Genitive, neuter, plural of yuga

yuga - yuga, age, epoch, pair, yoke

Root: yuj (class 7)

Note: Indicates possession or 'among'.

विप्रर्षे (viprarṣe) - O Brahmin-sage (viprarṣi) (O Brahmin-sage)

(noun)

Vocative, masculine, singular of viprarṣi

viprarṣi - a Brahmin-sage, a sage of priestly class

Compound type : karmadhāraya (vipra+ṛṣi)

• vipra – Brahmin, learned, inspired
  noun (masculine)
  Root: vip (class 2)
• ṛṣi – sage, seer, inspired poet
  noun (masculine)
  Root: ṛṣ (class 4)

Note: Addressing the interlocutor.

सहस्रपरिवर्तनम् (sahasraparivartanam) - a thousand rotations (a thousand revolutions/turnings)

(noun)

Nominative, neuter, singular of sahasraparivartana

sahasraparivartana - a thousand cycles/revolutions, a period of a thousand transformations

Compound type : tatpuruṣa (sahasra+parivartana)

• sahasra – a thousand
  numeral (neuter)
• parivartana – turning, revolving, cycle, change, revolution
  noun (neuter)
  Derived from root 'vṛt' (to turn) with upasarga 'pari-'.
  Prefix: pari
  Root: vṛt (class 1)

Note: The duration indicated by 'yāvat'.

तावत् (tāvat) - so long (for that duration) (so long, so much, for that duration)

(indeclinable)

स्वपिमि (svapimi) - I sleep

(verb)

1st person , singular, active, present (laṭ) of svap

Present Active Indicative

From root 'svap' (to sleep), 2nd class verb, Pāṇinian dhātupāṭha 2.15.

Root: svap (class 2)

Note: The verb's subject is 'aham' (I), referring to Nārāyaṇa.

विश्वात्मन् (viśvātman) - the universal Self (viśvātman) (universal Self, universal soul)

(noun)

Nominative, masculine, singular of viśvātman

viśvātman - universal soul, the soul of the universe, cosmic Self

Compound type : tatpuruṣa/karmadhāraya (viśva+ātman)

• viśva – all, whole, universal
  adjective (neuter)
• ātman – Self, soul, spirit, essence
  noun (masculine)
  Root: an (class 2)

Note: An epithet of the speaker, Nārāyaṇa.

सर्वलोकपितामहः (sarvalokapitāmahaḥ) - the grandfather of all worlds (Brahma) (grandfather of all worlds (Brahma))

(proper noun)

Nominative, masculine, singular of sarvalokapitāmaha

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

Compound type : tatpuruṣa (sarva+loka+pitāmaha)

• sarva – all, every
  adjective (neuter)
• loka – world, realm
  noun (masculine)
  Root: loc (class 1)
• pitāmaha – grandfather, great-father, Brahmā
  noun (masculine)

Note: An epithet of the speaker, Nārāyaṇa, in this context.