महाभारतः mahābhārataḥ - book-3, chapter-243, verse-12

निहतेषु नरश्रेष्ठ प्राप्ते चापि महाक्रतौ ।
राजसूये पुनर्वीर त्वं मां संवर्धयिष्यसि ॥१२॥

12. nihateṣu naraśreṣṭha prāpte cāpi mahākratau ,
rājasūye punarvīra tvaṁ māṁ saṁvardhayiṣyasi.

12. nihateṣu naraśreṣṭha prāpte ca api mahākratau
rājasūye punaḥ vīra tvam mām saṃvardhayiṣyasi

12. naraśreṣṭha vīra nihateṣu ca api mahākratau
rājasūye prāpte tvam mām punaḥ saṃvardhayiṣyasi

12. O best of men, O hero, when [enemies] are slain and this great Vedic ritual (yajña), the Rājasūya, has been accomplished, you will again cause me to prosper.

Words meanings summery:

• निहतेषु (nihateṣu) - when enemies are slain (when slain, among those slain)

• नरश्रेष्ठ (naraśreṣṭha) - O best of men (addressing Yudhiṣṭhira) (O best of men)

• प्राप्ते (prāpte) - when achieved (when obtained, when achieved)

• च (ca) - and (and, also, moreover)

• अपि (api) - even (even, also, too)

• महाक्रतौ (mahākratau) - in this great Vedic ritual (yajña) (in the great Vedic ritual)

• राजसूये (rājasūye) - in the Rājasūya (yajña) (in the Rājasūya (Vedic ritual))

• पुनः (punaḥ) - again (again, back, once more)

• वीर (vīra) - O hero (addressing Yudhiṣṭhira) (O hero, O brave man)

• त्वम् (tvam) - you

• माम् (mām) - me

• संवर्धयिष्यसि (saṁvardhayiṣyasi) - you will cause me to prosper (you will cause to prosper, you will augment, you will exalt)

Words meanings and morphology

निहतेषु (nihateṣu) - when enemies are slain (when slain, among those slain)

(adjective)

Locative, masculine, plural of nihata

nihata - slain, killed, destroyed, defeated

Past Passive Participle

Derived from root han with prefix ni.

Prefix: ni

Root: han (class 2)

नरश्रेष्ठ (naraśreṣṭha) - O best of men (addressing Yudhiṣṭhira) (O best of men)

(noun)

Vocative, masculine, singular of naraśreṣṭha

naraśreṣṭha - best among men, foremost of men

Compound type : tatpuruṣa (nara+śreṣṭha)

• nara – man, human being, person
  noun (masculine)
• śreṣṭha – best, most excellent, chief
  adjective

प्राप्ते (prāpte) - when achieved (when obtained, when achieved)

(adjective)

Locative, masculine, singular of prāpta

prāpta - obtained, reached, achieved, gained

Past Passive Participle

Derived from root āp with prefix pra.

Prefix: pra

Root: āp (class 5)

च (ca) - and (and, also, moreover)

(indeclinable)

अपि (api) - even (even, also, too)

(indeclinable)

महाक्रतौ (mahākratau) - in this great Vedic ritual (yajña) (in the great Vedic ritual)

(noun)

Locative, masculine, singular of mahākrata

mahākrata - great Vedic ritual (yajña), great sacrifice

Compound type : karmadhāraya (mahā+kratu)

• mahā – great, large, mighty
  adjective (feminine)
  Feminine stem of mahat
• kratu – Vedic ritual (yajña), sacrifice, resolve, power
  noun (masculine)

राजसूये (rājasūye) - in the Rājasūya (yajña) (in the Rājasūya (Vedic ritual))

(proper noun)

Locative, masculine, singular of rājasūya

rājasūya - a specific grand Vedic ritual (yajña) performed by universal monarchs

पुनः (punaḥ) - again (again, back, once more)

(indeclinable)

वीर (vīra) - O hero (addressing Yudhiṣṭhira) (O hero, O brave man)

(noun)

Vocative, masculine, singular of vīra

vīra - hero, brave man, warrior, chief

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you (singular)

माम् (mām) - me

(pronoun)

Accusative, singular of asmad

asmad - I, me

संवर्धयिष्यसि (saṁvardhayiṣyasi) - you will cause me to prosper (you will cause to prosper, you will augment, you will exalt)

(verb)

2nd person , singular, active, future (lṛṭ) of saṃvardh

Causative form of root vṛdh with prefix sam.

Prefix: sam

Root: vṛdh (class 1)