महाभारतः mahābhārataḥ - book-7, chapter-157, verse-36

तथेति च प्रतिज्ञातं कर्णेन शिनिपुंगव ।
हृदि नित्यं तु कर्णस्य वधो गाण्डीवधन्वनः ॥३६॥

36. tatheti ca pratijñātaṁ karṇena śinipuṁgava ,
hṛdi nityaṁ tu karṇasya vadho gāṇḍīvadhanvanaḥ.

36. tathā iti ca pratijñātam karṇena śinipuṅgava
hṛdi nityam tu karṇasya vadhaḥ gāṇḍīvadhanvanaḥ

36. śinipuṅgava karṇena tathā iti ca pratijñātam tu
karṇasya hṛdi gāṇḍīvadhanvanaḥ vadhaḥ nityam

36. O best among the Shinis (śinipuṅgava), thus was the vow made by Karna. Yet, the killing of Arjuna, the wielder of the Gāṇḍīva bow, was always in Karna's heart.

Words meanings summery:

• तथा (tathā) - thus, so, in that manner

• इति (iti) - thus, so; marks direct speech or thought

• च (ca) - and, also, moreover

• प्रतिज्ञातम् (pratijñātam) - promised, vowed, acknowledged

• कर्णेन (karṇena) - by Karna

• शिनिपुङ्गव (śinipuṅgava) - O best among the members of the Shini clan (an address to a specific person, likely Krishna or Arjuna, who belong to the Yadu-Shini lineage) (O best of the Shinis)

• हृदि (hṛdi) - in the heart, in the mind

• नित्यम् (nityam) - always, constantly, perpetually

• तु (tu) - but, on the other hand, indeed

• कर्णस्य (karṇasya) - of Karna

• वधः (vadhaḥ) - killing, slaughter, destruction

• गाण्डीवधन्वनः (gāṇḍīvadhanvanaḥ) - of Arjuna, the wielder of his divine bow named Gāṇḍīva (of the wielder of the Gāṇḍīva bow)

Words meanings and morphology

तथा (tathā) - thus, so, in that manner

(indeclinable)

इति (iti) - thus, so; marks direct speech or thought

(indeclinable)

च (ca) - and, also, moreover

(indeclinable)

प्रतिज्ञातम् (pratijñātam) - promised, vowed, acknowledged

(adjective)

Nominative, neuter, singular of pratijñāta

pratijñāta - promised, vowed, acknowledged, assented

Past Passive Participle

Derived from the root 'jñā' (to know) with the prefix 'prati'.

Prefix: prati

Root: jñā (class 9)

कर्णेन (karṇena) - by Karna

(proper noun)

Instrumental, masculine, singular of karṇa

karṇa - Karna (name of a prominent warrior in the Mahabharata)

शिनिपुङ्गव (śinipuṅgava) - O best among the members of the Shini clan (an address to a specific person, likely Krishna or Arjuna, who belong to the Yadu-Shini lineage) (O best of the Shinis)

(proper noun)

Vocative, masculine, singular of śinipuṅgava

śinipuṅgava - best of the Shinis (Śini was an ancestor of Krishna's clan)

Compound type : tatpurusha (śini+puṅgava)

• śini – name of an ancient hero, ancestor of the Yadavas
  proper noun (masculine)
• puṅgava – bull; chief, excellent, best among
  noun (masculine)

हृदि (hṛdi) - in the heart, in the mind

(noun)

Locative, neuter, singular of hṛd

hṛd - heart, mind, conscience

नित्यम् (nityam) - always, constantly, perpetually

(indeclinable)

Note: Used adverbially here.

तु (tu) - but, on the other hand, indeed

(indeclinable)

कर्णस्य (karṇasya) - of Karna

(proper noun)

Genitive, masculine, singular of karṇa

karṇa - Karna (name of a prominent warrior in the Mahabharata)

वधः (vadhaḥ) - killing, slaughter, destruction

(noun)

Nominative, masculine, singular of vadha

vadha - killing, slaughter, striking, destruction

Root: vadh

गाण्डीवधन्वनः (gāṇḍīvadhanvanaḥ) - of Arjuna, the wielder of his divine bow named Gāṇḍīva (of the wielder of the Gāṇḍīva bow)

(proper noun)

Genitive, masculine, singular of gāṇḍīvadhanvan

gāṇḍīvadhanvan - one whose bow is Gāṇḍīva, an epithet for Arjuna

Compound type : bahuvrihi (gāṇḍīva+dhanvan)

• gāṇḍīva – name of Arjuna's divine bow
  proper noun (neuter)
• dhanvan – bow, archer
  noun (neuter)