महाभारतः mahābhārataḥ - book-12, chapter-299, verse-14

त्रीणि कल्पसहस्राणि एतेषामहरुच्यते ।
रात्रिरेतावती चैव मनसश्च नराधिप ॥१४॥

14. trīṇi kalpasahasrāṇi eteṣāmaharucyate ,
rātriretāvatī caiva manasaśca narādhipa.

14. trīṇi kalpasahasrāṇi eteṣām ahaḥ ucyate |
rātriḥ etāvatī ca eva manasaḥ ca narādhipa

14. narādhipa eteṣām trīṇi kalpasahasrāṇi ahaḥ
ucyate rātriḥ ca etāvatī eva ca manasaḥ (api)

14. O King of men, for these (beings), a day is said to be three thousand cosmic ages (kalpas), and their night is of the same duration. This also holds true for the mind (manas).

Words meanings summery:

• त्रीणि (trīṇi) - three

• कल्पसहस्राणि (kalpasahasrāṇi) - thousands of kalpas (cosmic ages)

• एतेषाम् (eteṣām) - of these, for these

• अहः (ahaḥ) - day

• उच्यते (ucyate) - is said, is called

• रात्रिः (rātriḥ) - night

• एतावती (etāvatī) - of this much duration, so long, equally long

• च (ca) - and

• एव (eva) - indeed, just, only

• मनसः (manasaḥ) - of the mind

• च (ca) - and, also

• नराधिप (narādhipa) - O king of men

Words meanings and morphology

त्रीणि (trīṇi) - three

(adjective)

Nominative, neuter, plural of tri

tri - three

कल्पसहस्राणि (kalpasahasrāṇi) - thousands of kalpas (cosmic ages)

(noun)

Nominative, neuter, plural of kalpasahasra

kalpasahasra - a thousand kalpas, a thousand cosmic ages

Compound type : ṣaṣṭhī-tatpuruṣa (kalpa+sahasra)

• kalpa – a cosmic age, aeon, rule, law
  noun (masculine)
• sahasra – thousand
  numeral (neuter)

एतेषाम् (eteṣām) - of these, for these

(pronoun)

Genitive, masculine, plural of etad

etad - this, these

अहः (ahaḥ) - day

(noun)

Nominative, neuter, singular of ahan

ahan - day

उच्यते (ucyate) - is said, is called

(verb)

3rd person , singular, passive, present indicative (laṭ) of vac

Root: vac (class 2)

रात्रिः (rātriḥ) - night

(noun)

Nominative, feminine, singular of rātri

rātri - night

एतावती (etāvatī) - of this much duration, so long, equally long

(adjective)

Nominative, feminine, singular of etāvat

etāvat - so much, so many, of such a measure

Note: Agrees with 'rātriḥ'

च (ca) - and

(indeclinable)

एव (eva) - indeed, just, only

(indeclinable)

मनसः (manasaḥ) - of the mind

(noun)

Genitive, neuter, singular of manas

manas - mind, intellect, heart

च (ca) - and, also

(indeclinable)

नराधिप (narādhipa) - O king of men

(noun)

Vocative, masculine, singular of narādhipa

narādhipa - king of men, ruler of men

Compound type : ṣaṣṭhī-tatpuruṣa (nara+adhipa)

• nara – man, human being
  noun (masculine)
• adhipa – lord, ruler, master
  noun (masculine)