महाभारतः mahābhārataḥ - book-5, chapter-167, verse-12

एकायनगतावेतौ पार्थेन दृढभक्तिकौ ।
त्यक्त्वा प्राणान्परं शक्त्या घटितारौ नराधिप ॥१२॥

12. ekāyanagatāvetau pārthena dṛḍhabhaktikau ,
tyaktvā prāṇānparaṁ śaktyā ghaṭitārau narādhipa.

12. ekāyanagatau etau pārthena dṛḍhabhaktikau
tyaktvā prāṇān param śaktyā ghaṭitārau narādhipa

12. narādhipa etau ekāyanagatau dṛḍhabhaktikau
pārthena prāṇān tyaktvā param śaktyā ghaṭitārau

12. O king (narādhipa)! These two, having adopted a single path and possessing firm devotion (bhakti), will strive with utmost strength, giving up their lives for Pārtha.

Words meanings summery:

• एकायनगतौ (ekāyanagatau) - having adopted a single path, united in purpose

• एतौ (etau) - these two

• पार्थेन (pārthena) - for Pārtha (Arjuna), by Pārtha

• दृढभक्तिकौ (dṛḍhabhaktikau) - having firm devotion

• त्यक्त्वा (tyaktvā) - having abandoned, having given up

• प्राणान् (prāṇān) - lives, breaths

• परम् (param) - with utmost (strength) (utmost, to the highest degree)

• शक्त्या (śaktyā) - by strength, with power

• घटितारौ (ghaṭitārau) - they two will strive, will exert themselves

• नराधिप (narādhipa) - O king, O lord of men

Words meanings and morphology

एकायनगतौ (ekāyanagatau) - having adopted a single path, united in purpose

(adjective)

Nominative, masculine, dual of ekāyanagata

ekāyanagata - having gone on one path, having a single aim/course

Compound type : tatpuruṣa (ekāyana+gata)

• ekāyana – one path, single course, sole refuge
  noun (neuter)
• gata – gone, moved, resorted to, followed
  adjective
  Past Passive Participle
  Root: gam (class 1)

एतौ (etau) - these two

(pronoun)

Nominative, masculine, dual of etad

etad - this, these

पार्थेन (pārthena) - for Pārtha (Arjuna), by Pārtha

(proper noun)

Instrumental, masculine, singular of pārtha

pārtha - son of Pṛthā (Kuntī), Arjuna

दृढभक्तिकौ (dṛḍhabhaktikau) - having firm devotion

(adjective)

Nominative, masculine, dual of dṛḍhabhaktika

dṛḍhabhaktika - having firm devotion (bhakti)

Compound type : bahuvrihi (dṛḍha+bhakti)

• dṛḍha – firm, strong, resolute, solid
  adjective
• bhakti – devotion, attachment, worship (bhakti)
  noun (feminine)

त्यक्त्वा (tyaktvā) - having abandoned, having given up

(indeclinable)

Absolutive

Root: tyaj (class 1)

प्राणान् (prāṇān) - lives, breaths

(noun)

Accusative, masculine, plural of prāṇa

prāṇa - life, breath, vital air

परम् (param) - with utmost (strength) (utmost, to the highest degree)

(indeclinable)

शक्त्या (śaktyā) - by strength, with power

(noun)

Instrumental, feminine, singular of śakti

śakti - power, strength, ability (śakti)

घटितारौ (ghaṭitārau) - they two will strive, will exert themselves

(noun)

Nominative, masculine, dual of ghaṭitṛ

ghaṭitṛ - one who strives, one who endeavors, agent of striving

Agent Noun

Derived from root ghaṭ with the agent suffix tṛ, often conveying a future sense.

Root: ghaṭ (class 1)

नराधिप (narādhipa) - O king, O lord of men

(noun)

Vocative, masculine, singular of narādhipa

narādhipa - lord of men, king

Compound type : tatpuruṣa (nara+adhipa)

• nara – man, person
  noun (masculine)
• adhipa – lord, ruler, master
  noun (masculine)