महाभारतः mahābhārataḥ - book-5, chapter-188, verse-3

वधार्थं तस्य दीक्षा मे न लोकार्थं तपोधनाः ।
निहत्य भीष्मं गच्छेयं शान्तिमित्येव निश्चयः ॥३॥

3. vadhārthaṁ tasya dīkṣā me na lokārthaṁ tapodhanāḥ ,
nihatya bhīṣmaṁ gaccheyaṁ śāntimityeva niścayaḥ.

3. vadha-artham tasya dīkṣā me na loka-artham tapodhanāḥ
nihatya bhīṣmam gaccheyam śāntim iti eva niścayaḥ

3. tapodhanāḥ,
me dīkṣā tasya vadha-artham na loka-artham.
bhīṣmam nihatya śāntim gaccheyam iti eva niścayaḥ.

3. O ascetics, my vow (dīkṣā) is for his killing, not for any worldly gain. Having slain Bhishma, I shall attain peace (śānti) – this is my firm resolve.

Words meanings summery:

• वध-अर्थम् (vadha-artham) - for the purpose of killing, for killing

• तस्य (tasya) - of Bhishma, his (Bhishma's) (of him, his)

• दीक्षा (dīkṣā) - vow, initiation, consecration, solemn undertaking

• मे (me) - my (vow) (my, to me, by me)

• न (na) - not, no

• लोक-अर्थम् (loka-artham) - for the sake of the world, for worldly gain

• तपोधनाः (tapodhanāḥ) - O ascetics (O ascetics, O those whose wealth is austerity)

• निहत्य (nihatya) - having struck, having killed

• भीष्मम् (bhīṣmam) - Bhishma (the character in Mahabharata) (Bhishma (proper noun), terrible, formidable)

• गच्छेयम् (gaccheyam) - I would attain (peace) (I would go, I should go, I would attain)

• शान्तिम् (śāntim) - peace, tranquility, quiet

• इति (iti) - thus, in this way, (marks direct speech or thought)

• एव (eva) - truly, indeed, only, just

• निश्चयः (niścayaḥ) - certainty, firm resolve, decision

Words meanings and morphology

वध-अर्थम् (vadha-artham) - for the purpose of killing, for killing

(noun)

Accusative, neuter, singular of vadha-artha

vadha-artha - for the purpose of killing, for the sake of killing

Compound type : tatpurusha (vadha+artha)

• vadha – killing, slaughter, stroke
  noun (masculine)
  Root: vadh (class 1)
• artha – purpose, meaning, wealth, object
  noun (masculine)

Note: Acts adverbially to indicate purpose.

तस्य (tasya) - of Bhishma, his (Bhishma's) (of him, his)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it

Note: Refers to Bhishma.

दीक्षा (dīkṣā) - vow, initiation, consecration, solemn undertaking

(noun)

Nominative, feminine, singular of dīkṣā

dīkṣā - vow, initiation, consecration, solemn undertaking

From root `dīkṣ` (to consecrate oneself)

Root: dīkṣ (class 1)

मे (me) - my (vow) (my, to me, by me)

(pronoun)

Genitive, singular of aham

aham - I

न (na) - not, no

(indeclinable)

लोक-अर्थम् (loka-artham) - for the sake of the world, for worldly gain

(noun)

Accusative, neuter, singular of loka-artha

loka-artha - for the sake of the world, for worldly gain

Compound type : tatpurusha (loka+artha)

• loka – world, people, realm
  noun (masculine)
• artha – purpose, meaning, wealth, object
  noun (masculine)

Note: Acts adverbially to indicate purpose.

तपोधनाः (tapodhanāḥ) - O ascetics (O ascetics, O those whose wealth is austerity)

(noun)

Vocative, masculine, plural of tapodhana

tapodhana - rich in austerity, one whose wealth is religious austerity, ascetic

Compound type : bahuvrīhi (tapas+dhana)

• tapas – austerity, heat, religious devotion
  noun (neuter)
  Root: tap (class 1)
• dhana – wealth, riches, property
  noun (neuter)

Note: Addressing the ascetics.

निहत्य (nihatya) - having struck, having killed

(indeclinable)

Absolutive (Gerund)

From root `han` with prefix `ni`.

Prefix: ni

Root: han (class 2)

भीष्मम् (bhīṣmam) - Bhishma (the character in Mahabharata) (Bhishma (proper noun), terrible, formidable)

(proper noun)

Accusative, masculine, singular of bhīṣma

bhīṣma - Bhishma, terrible, formidable

Note: Object of `nihatya`.

गच्छेयम् (gaccheyam) - I would attain (peace) (I would go, I should go, I would attain)

(verb)

1st person , singular, active, optative (vidhi-liṅ) of gam

Optative mood, first person singular.

Root `gam` (class 1, often behaves like class 10 in some forms). Optative forms for Class 1 `gam` are `gacchet`, `gaccheyam`.

Root: gam (class 1)

Note: Expresses desire or potential.

शान्तिम् (śāntim) - peace, tranquility, quiet

(noun)

Accusative, feminine, singular of śānti

śānti - peace, tranquility, quiet, cessation

From root `śam` (to be calm)

Root: śam (class 4)

Note: Object of `gaccheyam`.

इति (iti) - thus, in this way, (marks direct speech or thought)

(indeclinable)

एव (eva) - truly, indeed, only, just

(indeclinable)

निश्चयः (niścayaḥ) - certainty, firm resolve, decision

(noun)

Nominative, masculine, singular of niścaya

niścaya - certainty, firm resolve, decision, conviction

From root `ci` with prefix `nis`.

Prefix: nis

Root: ci (class 5)

Note: Predicate noun for the implied 'this' (idam).