वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-6, chapter-77, verse-13

अयुक्तं निधनं कर्तुं पुत्रस्य जनितुर्मम ।
घृणामपास्य रामार्थे निहन्यां भ्रातुरात्मजम् ॥१३॥

13. ayuktaṃ nidhanaṃ kartuṃ putrasya janiturmama ,
ghṛṇāmapāsya rāmārthe nihanyāṃ bhrāturātmajam.

13. ayuktam nidhanam kartum putrasya janituḥ mama
ghṛṇām apāsya rāmārthe nihanyām bhrātuḥ ātmajam

13. mama janituḥ putrasya nidhanam kartum ayuktam
ghṛṇām apāsya rāmārthe bhrātuḥ ātmajam nihanyām

13. It is improper for me to cause the death of my father's son (my brother). Yet, setting aside compassion for Rāma's sake, I would even kill my brother's son (my nephew).

Words meanings summery:

• अयुक्तम् (ayuktam) - improper, unrighteous, unsuitable

• निधनम् (nidhanam) - causing the death (death, destruction, killing)

• कर्तुम् (kartum) - to cause (the death) (to do, to make, to cause)

• पुत्रस्य (putrasya) - of a son

• जनितुः (janituḥ) - of (my) father (of a father, of a progenitor)

• मम (mama) - my (father) (my, of me)

• घृणाम् (ghṛṇām) - compassion (compassion, pity, disgust)

• अपास्य (apāsya) - setting aside (having cast aside, having abandoned)

• रामार्थे (rāmārthe) - for Rāma's sake (for Rama's sake, on account of Rama)

• निहन्याम् (nihanyām) - I would even kill (I would kill, I should kill)

• भ्रातुः (bhrātuḥ) - of a brother

• आत्मजम् (ātmajam) - my nephew (brother's son) (son, offspring)

Words meanings and morphology

अयुक्तम् (ayuktam) - improper, unrighteous, unsuitable

(adjective)

Nominative, neuter, singular of ayukta

ayukta - improper, unsuitable, not joined, separated, not engaged

Past Passive Participle

negative prefix a- + yukta (from root yuj 'to join')

Compound type : nañ-tatpuruṣa (a+yukta)

• a – not, un-
  indeclinable
• yukta – joined, connected, proper, fit
  adjective (neuter)
  Past Passive Participle
  from root yuj (to join)
  Root: yuj (class 7)

Note: Refers to the act of killing.

निधनम् (nidhanam) - causing the death (death, destruction, killing)

(noun)

Accusative, neuter, singular of nidhana

nidhana - death, destruction, end, killing

from ni-dhan, root dhā with ni

Prefix: ni

Root: dhā (class 3)

Note: Object of kartum.

कर्तुम् (kartum) - to cause (the death) (to do, to make, to cause)

(indeclinable)

infinitive

infinitive of root kṛ (to do, make)

Root: kṛ (class 8)

पुत्रस्य (putrasya) - of a son

(noun)

Genitive, masculine, singular of putra

putra - son, child

Note: Modifies janituḥ.

जनितुः (janituḥ) - of (my) father (of a father, of a progenitor)

(noun)

Genitive, masculine, singular of janitṛ

janitṛ - father, progenitor, producer

agent noun from root jan (to be born, produce)

Root: jan (class 4)

Note: Modifies an implied 'son' (brother) which is the object of 'nidhanam kartum'.

मम (mama) - my (father) (my, of me)

(pronoun)

Genitive, singular of asmad

asmad - I, me (pronoun)

Note: Modifies janituḥ.

घृणाम् (ghṛṇām) - compassion (compassion, pity, disgust)

(noun)

Accusative, feminine, singular of ghṛṇā

ghṛṇā - compassion, pity, aversion, disgust

Note: Object of apāsya.

अपास्य (apāsya) - setting aside (having cast aside, having abandoned)

(indeclinable)

absolutive

from root as (to throw) with prefix apā

Prefix: apā

Root: as (class 4)

रामार्थे (rāmārthe) - for Rāma's sake (for Rama's sake, on account of Rama)

(noun)

Locative, masculine, singular of rāmārtha

rāmārtha - for the sake of Rama, on behalf of Rama

Compound type : tatpuruṣa (rāma+artha)

• rāma – Rama (proper name)
  proper noun (masculine)
• artha – purpose, meaning, sake, wealth
  noun (masculine)

निहन्याम् (nihanyām) - I would even kill (I would kill, I should kill)

(verb)

1st person , singular, active, optative (liṅ) of han

optative

1st person singular active optative of root han (to strike, kill) with prefix ni

Prefix: ni

Root: han (class 2)

भ्रातुः (bhrātuḥ) - of a brother

(noun)

Genitive, masculine, singular of bhrātṛ

bhrātṛ - brother

Note: Modifies ātmajam.

आत्मजम् (ātmajam) - my nephew (brother's son) (son, offspring)

(noun)

Accusative, masculine, singular of ātmaja

ātmaja - son, offspring, born of oneself

from ātman (self) + ja (born)

Compound type : tatpuruṣa (ātman+ja)

• ātman – self, soul, essence, spirit
  noun (masculine)
• ja – born, produced from
  adjective (masculine)
  from root jan (to be born)
  Root: jan (class 4)

Note: Object of nihanyām.