महाभारतः mahābhārataḥ - book-5, chapter-139, verse-49

दुर्योधनं यदा हन्ता भीमसेनो महाबलः ।
तदा समाप्स्यते यज्ञो धार्तराष्ट्रस्य माधव ॥४९॥

49. duryodhanaṁ yadā hantā bhīmaseno mahābalaḥ ,
tadā samāpsyate yajño dhārtarāṣṭrasya mādhava.

49. duryodhanam yadā hantā bhīmasenaḥ mahābalaḥ
tadā samāpsyate yajñaḥ dhārtarāṣṭrasya mādhava

49. mādhava yadā mahābalaḥ bhīmasenaḥ duryodhanam
hantā tadā dhārtarāṣṭrasya yajñaḥ samāpsyate

49. O Mādhava, when the mighty Bhīmasena kills Duryodhana, then the Vedic ritual (yajña) of Dhṛtarāṣṭra's son will be completed.

Words meanings summery:

• दुर्योधनम् (duryodhanam) - Duryodhana

• यदा (yadā) - when

• हन्ता (hantā) - one who kills, will kill

• भीमसेनः (bhīmasenaḥ) - Bhīmasena (Bhīma)

• महाबलः (mahābalaḥ) - greatly powerful, mighty

• तदा (tadā) - then, at that time

• समाप्स्यते (samāpsyate) - will be completed, will be finished

• यज्ञः (yajñaḥ) - sacrifice, offering (yajña)

• धार्तराष्ट्रस्य (dhārtarāṣṭrasya) - of Duryodhana (or the Kaurava party) (of the son of Dhṛtarāṣṭra)

• माधव (mādhava) - O Mādhava (epithet of Kṛṣṇa)

Words meanings and morphology

दुर्योधनम् (duryodhanam) - Duryodhana

(proper noun)

Accusative, masculine, singular of duryodhana

duryodhana - Duryodhana (name of the eldest Kaurava prince)

Prefix: dur

Root: yudh (class 4)

यदा (yadā) - when

(indeclinable)

हन्ता (hantā) - one who kills, will kill

(noun)

Nominative, masculine, singular of hantṛ

hantṛ - killer, slayer

Agent noun (future sense)

from root han (to strike, kill) with tṛ affix, masculine nominative singular, often used with future sense.

Root: han (class 2)

Note: Functions as a future active participle or agent noun indicating future action.

भीमसेनः (bhīmasenaḥ) - Bhīmasena (Bhīma)

(proper noun)

Nominative, masculine, singular of bhīmasena

bhīmasena - Bhīmasena (name of a Pāṇḍava brother)

महाबलः (mahābalaḥ) - greatly powerful, mighty

(adjective)

Nominative, masculine, singular of mahābala

mahābala - greatly powerful, mighty

Compound type : bahuvrīhi (mahā+bala)

• mahā – great, large
  adjective (feminine)
• bala – strength, power
  noun (neuter)

तदा (tadā) - then, at that time

(indeclinable)

समाप्स्यते (samāpsyate) - will be completed, will be finished

(verb)

3rd person , singular, passive, future (lṛṭ) of āp

Future passive (ātmanepada) from root āp (5P) with prefix sam.

Prefixes: sam+ā

Root: āp (class 5)

यज्ञः (yajñaḥ) - sacrifice, offering (yajña)

(noun)

Nominative, masculine, singular of yajña

yajña - sacrifice, offering, worship (yajña)

Root: yaj (class 1)

धार्तराष्ट्रस्य (dhārtarāṣṭrasya) - of Duryodhana (or the Kaurava party) (of the son of Dhṛtarāṣṭra)

(noun)

Genitive, masculine, singular of dhārtarāṣṭra

dhārtarāṣṭra - son of Dhṛtarāṣṭra

Patronymic from Dhṛtarāṣṭra

माधव (mādhava) - O Mādhava (epithet of Kṛṣṇa)

(proper noun)

Vocative, masculine, singular of mādhava

mādhava - descendant of Madhu, husband of Lakṣmī, an epithet of Kṛṣṇa/Viṣṇu

Patronymic from Madhu