महाभारतः mahābhārataḥ - book-5, chapter-139, verse-53

शस्त्रेण निधनं गच्छेत्समृद्धं क्षत्रमण्डलम् ।
कुरुक्षेत्रे पुण्यतमे त्रैलोक्यस्यापि केशव ॥५३॥

53. śastreṇa nidhanaṁ gacchetsamṛddhaṁ kṣatramaṇḍalam ,
kurukṣetre puṇyatame trailokyasyāpi keśava.

53. śastreṇa nidhanam gacchet samṛddham kṣatramaṇḍalam
kurukṣetre puṇyatame trailokyasya api keśava

53. keśava samṛddham kṣatramaṇḍalam trailokyasya api
puṇyatame kurukṣetre śastreṇa nidhanam gacchet

53. O Keśava, should the flourishing assembly of kṣatriyas perish by weapons in Kurukṣetra, the most sacred (land) even among the three worlds?

Words meanings summery:

• शस्त्रेण (śastreṇa) - by weapon, by weapons

• निधनम् (nidhanam) - death, destruction, demise

• गच्छेत् (gacchet) - should perish, should meet death (should go, should attain, should meet)

• समृद्धम् (samṛddham) - flourishing, prosperous, abundant, complete

• क्षत्रमण्डलम् (kṣatramaṇḍalam) - the assembly of kṣatriyas, the warrior community

• कुरुक्षेत्रे (kurukṣetre) - in Kurukṣetra

• पुण्यतमे (puṇyatame) - in the most sacred, in the holiest

• त्रैलोक्यस्य (trailokyasya) - of the three worlds

• अपि (api) - emphasizes 'even of the three worlds' (even, also, too)

• केशव (keśava) - O Kṛṣṇa (O Keśava (a name of Viṣṇu/Kṛṣṇa))

Words meanings and morphology

शस्त्रेण (śastreṇa) - by weapon, by weapons

(noun)

Instrumental, neuter, singular of śastra

śastra - weapon, arm, knife

Root: śas (class 2)

निधनम् (nidhanam) - death, destruction, demise

(noun)

Accusative, neuter, singular of nidhana

nidhana - death, destruction, end, loss

Prefix: ni

Root: dhā (class 3)

गच्छेत् (gacchet) - should perish, should meet death (should go, should attain, should meet)

(verb)

3rd person , singular, active, optative (vidhi-liṅ) of gam

Root: gam (class 1)

समृद्धम् (samṛddham) - flourishing, prosperous, abundant, complete

(adjective)

Nominative, neuter, singular of samṛddha

samṛddha - flourishing, prosperous, rich, accomplished

Past Passive Participle

Derived from root ṛdh (to prosper) with prefix sam-

Prefix: sam

Root: ṛdh (class 4)

Note: Agrees with 'kṣatramaṇḍalam'.

क्षत्रमण्डलम् (kṣatramaṇḍalam) - the assembly of kṣatriyas, the warrior community

(noun)

Nominative, neuter, singular of kṣatramaṇḍala

kṣatramaṇḍala - the circle of warriors, the warrior class/community

Compound type : tatpuruṣa (kṣatra+maṇḍala)

• kṣatra – warrior class, power, dominion
  noun (neuter)
• maṇḍala – circle, disc, assembly, district
  noun (neuter)

कुरुक्षेत्रे (kurukṣetre) - in Kurukṣetra

(proper noun)

Locative, neuter, singular of kurukṣetra

kurukṣetra - the field of the Kurus, a famous holy battlefield in the Mahābhārata

पुण्यतमे (puṇyatame) - in the most sacred, in the holiest

(adjective)

Locative, neuter, singular of puṇyatama

puṇyatama - most sacred, most holy

superlative of 'puṇya'

Note: Agrees with 'kurukṣetre'.

त्रैलोक्यस्य (trailokyasya) - of the three worlds

(noun)

Genitive, neuter, singular of trailokya

trailokya - the three worlds (heaven, earth, and the lower regions)

Compound type : tatpuruṣa (tri+loka)

• tri – three
  numeral
• loka – world, realm, people
  noun (masculine)
  Root: lok (class 10)

अपि (api) - emphasizes 'even of the three worlds' (even, also, too)

(indeclinable)

केशव (keśava) - O Kṛṣṇa (O Keśava (a name of Viṣṇu/Kṛṣṇa))

(proper noun)

Vocative, masculine, singular of keśava

keśava - having beautiful hair; slayer of the demon Keśī (an epithet of Viṣṇu/Kṛṣṇa)