महाभारतः mahābhārataḥ - book-6, chapter-94, verse-18

सुखं स्वपिहि गान्धारे श्वोऽस्मि कर्ता महारणम् ।
यज्जनाः कथयिष्यन्ति यावत्स्थास्यति मेदिनी ॥१८॥

18. sukhaṁ svapihi gāndhāre śvo'smi kartā mahāraṇam ,
yajjanāḥ kathayiṣyanti yāvatsthāsyati medinī.

18. sukham svapihi gāndhāre śvaḥ asmi kartā mahāraṇam
yat janāḥ kathayiṣyanti yāvat sthāsyati medinī

18. gāndhāre sukham svapihi śvaḥ aham mahāraṇam kartā
asmi yat janāḥ yāvat medinī sthāsyati kathayiṣyanti

18. O Gāndhārī, sleep peacefully. Tomorrow I shall wage a great war, of which people will speak as long as the earth (medinī) endures.

Words meanings summery:

• सुखम् (sukham) - peacefully (happily, comfortably, easily)

• स्वपिहि (svapihi) - sleep!

• गान्धारे (gāndhāre) - O Gāndhārī

• श्वः (śvaḥ) - tomorrow

• अस्मि (asmi) - I am

• कर्ता (kartā) - (I) will wage/do (a battle) (doer, agent, one who will do)

• महारणम् (mahāraṇam) - great battle, great war

• यत् (yat) - which (referring to the great battle) (which, that (neuter, accusative))

• जनाः (janāḥ) - people, men

• कथयिष्यन्ति (kathayiṣyanti) - they will tell, they will speak

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

• स्थास्यति (sthāsyati) - will endure, will exist (it will stand, it will remain, it will exist)

• मेदिनी (medinī) - the earth, soil

Words meanings and morphology

सुखम् (sukham) - peacefully (happily, comfortably, easily)

(indeclinable)

Note: Functions as an adverb

स्वपिहि (svapihi) - sleep!

(verb)

2nd person , singular, active, imperative (loṭ) of svap

Root: svap (class 2)

गान्धारे (gāndhāre) - O Gāndhārī

(proper noun)

Vocative, feminine, singular of gāndhārī

gāndhārī - princess of Gāndhāra, wife of Dhṛtarāṣṭra, mother of the Kauravas

श्वः (śvaḥ) - tomorrow

(indeclinable)

अस्मि (asmi) - I am

(verb)

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

Root: as (class 2)

कर्ता (kartā) - (I) will wage/do (a battle) (doer, agent, one who will do)

(noun)

Nominative, masculine, singular of kartṛ

kartṛ - doer, maker, agent

Agent noun

Derived from root kṛ (to do, make) + tṛc pratyaya

Root: kṛ (class 8)

Note: This construction (kartā asmi) denotes a future action, 'I will do'

महारणम् (mahāraṇam) - great battle, great war

(noun)

Accusative, neuter, singular of mahāraṇa

mahāraṇa - great battle, major war

Compound type : karmadhāraya (mahat+raṇa)

• mahat – great, large, vast
  adjective
• raṇa – battle, war, conflict
  noun (masculine)
  Root: raṇ (class 1)

Note: Compound noun

यत् (yat) - which (referring to the great battle) (which, that (neuter, accusative))

(pronoun)

Accusative, neuter, singular of yad

yad - who, which, what

Note: Declined form of yad

जनाः (janāḥ) - people, men

(noun)

Nominative, masculine, plural of jana

jana - person, people, man, creature

कथयिष्यन्ति (kathayiṣyanti) - they will tell, they will speak

(verb)

3rd person , plural, active, future (ḷr̥ṭ) of kathay

Causative stem

Derived from root 'kath' (to speak) + -ay- suffix (causative) and then future ending

Root: kath (class 10)

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

(indeclinable)

स्थास्यति (sthāsyati) - will endure, will exist (it will stand, it will remain, it will exist)

(verb)

3rd person , singular, active, future (ḷr̥ṭ) of sthā

Root: sthā (class 1)

मेदिनी (medinī) - the earth, soil

(noun)

Nominative, feminine, singular of medinī

medinī - the earth, soil, land