महाभारतः mahābhārataḥ - book-13, chapter-110, verse-128

यावद्वर्षसहस्रं तु जम्बूद्वीपे प्रवर्षति ।
तावत्संवत्सराः प्रोक्ता ब्रह्मलोकस्य धीमतः ॥१२८॥

128. yāvadvarṣasahasraṁ tu jambūdvīpe pravarṣati ,
tāvatsaṁvatsarāḥ proktā brahmalokasya dhīmataḥ.

128. yāvat varṣasahastram tu jambūdvīpe pravarṣati
tāvat saṃvatsarāḥ proktāḥ brahmalokasya dhīmataḥ

128. yāvat jambūdvīpe varṣasahastram tu pravarṣati
tāvat brahmalokasya dhīmataḥ saṃvatsarāḥ proktāḥ

128. Indeed, for as long as a thousand years (varṣa) pass on Jambudvīpa, that many years are declared for the wise (dhīmat) one of Brahmā's world (brahmaloka).

Words meanings summery:

• यावत् (yāvat) - as long as, as far as, to what extent

• वर्षसहस्त्रम् (varṣasahastram) - a thousand years

• तु (tu) - but, indeed, however

• जम्बूद्वीपे (jambūdvīpe) - on Jambudvīpa (a continent)

• प्रवर्षति (pravarṣati) - it passes (referring to the duration of years) (it rains, it passes (of time))

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

• संवत्सराः (saṁvatsarāḥ) - years

• प्रोक्ताः (proktāḥ) - are declared, are said

• ब्रह्मलोकस्य (brahmalokasya) - of Brahmā's world, of the world of Brahmā

• धीमतः (dhīmataḥ) - of the wise Brahmā (of the wise one)

Words meanings and morphology

यावत् (yāvat) - as long as, as far as, to what extent

(indeclinable)

वर्षसहस्त्रम् (varṣasahastram) - a thousand years

(noun)

Accusative, neuter, singular of varṣasahastra

varṣasahastra - a thousand years

Compound type : tatpurusha (varṣa+sahastra)

• varṣa – year, rain, rainy season
  noun (neuter)
  Root: vṛṣ (class 1)
• sahastra – thousand
  noun (neuter)

Note: Indicates duration

तु (tu) - but, indeed, however

(indeclinable)

जम्बूद्वीपे (jambūdvīpe) - on Jambudvīpa (a continent)

(proper noun)

Locative, masculine, singular of jambūdvīpa

jambūdvīpa - Jambudvīpa, one of the seven continents in Hindu cosmology

Compound type : tatpurusha (jambū+dvīpa)

• jambū – rose-apple tree, its fruit
  noun (feminine)
• dvīpa – island, continent
  noun (masculine)

प्रवर्षति (pravarṣati) - it passes (referring to the duration of years) (it rains, it passes (of time))

(verb)

3rd person , singular, active, present indicative (laṭ) of pra-vṛṣ

Prefix: pra

Root: vṛṣ (class 1)

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

(indeclinable)

संवत्सराः (saṁvatsarāḥ) - years

(noun)

Nominative, masculine, plural of saṃvatsara

saṁvatsara - year, a complete period

प्रोक्ताः (proktāḥ) - are declared, are said

(adjective)

Nominative, masculine, plural of prokta

prokta - declared, said, proclaimed

Past Passive Participle

Derived from the root vac ('to speak') with the prefix pra-

Prefix: pra

Root: vac (class 2)

ब्रह्मलोकस्य (brahmalokasya) - of Brahmā's world, of the world of Brahmā

(noun)

Genitive, masculine, singular of brahmaloka

brahmaloka - the world of Brahmā

Compound type : tatpurusha (brahman+loka)

• brahman – the Absolute, the Supreme Being; Brahmā (the creator god)
  noun (neuter)
  Root: bṛh (class 1)
• loka – world, realm, sphere
  noun (masculine)

धीमतः (dhīmataḥ) - of the wise Brahmā (of the wise one)

(adjective)

Genitive, masculine, singular of dhīmat

dhīmat - wise, intelligent, thoughtful

Possessive suffix -mat added to dhī (intellect)

Note: Here, likely refers to Brahmā.