वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-3, chapter-45, verse-13

त्वया तु खलु वस्तव्यं नव वर्षाणि पञ्च च ।
वने प्रव्रज काकुत्स्थ पितरं मोचयानृतात् ॥१३॥

13. tvayā tu khalu vastavyaṃ nava varṣāṇi pañca ca ,
vane pravraja kākutstha pitaraṃ mocayānṛtāt.

13. tvayā tu khalu vastavyam nava varṣāṇi pañca ca
vane pravraja kākutstha pitaram mocaya anṛtāt

13. tu khalu tvayā nava pañca ca varṣāṇi vane vastavyam
kākutstha vane pravraja pitaram anṛtāt mocaya

13. But you, indeed, must reside in the forest for nine and five years [i.e., fourteen years]. O Kakutstha, go forth into the forest and release your father from his falsehood (anṛta).

Words meanings summery:

• त्वया (tvayā) - by you

• तु (tu) - but, indeed, yet

• खलु (khalu) - indeed, certainly, surely

• वस्तव्यम् (vastavyam) - to be resided, must reside, should live

• नव (nava) - nine

• वर्षाणि (varṣāṇi) - years

• पञ्च (pañca) - five

• च (ca) - and

• वने (vane) - in the forest

• प्रव्रज (pravraja) - go forth, depart

• काकुत्स्थ (kākutstha) - O Rama (O Kakutstha (descendant of Kakutstha))

• पितरम् (pitaram) - the father

• मोचय (mocaya) - release, free, cause to abandon

• अनृतात् (anṛtāt) - from falsehood, from untruth, from breaking one's word

Words meanings and morphology

त्वया (tvayā) - by you

(pronoun)

Instrumental, singular of yuṣmad

yuṣmad - you, yourself

Note: Used with the gerundive 'vastavyam' in a passive construction.

तु (tu) - but, indeed, yet

(indeclinable)

खलु (khalu) - indeed, certainly, surely

(indeclinable)

वस्तव्यम् (vastavyam) - to be resided, must reside, should live

(adjective)

Nominative, neuter, singular of vastavya

vastavya - to be dwelt in, fit to be lived in, must be lived

Gerundive

From root 'vas' (to dwell) with suffix 'tavya'.

Root: vas (class 1)

नव (nava) - nine

(adjective)

Accusative, plural of nava

nava - nine

Note: Modifies 'varṣāṇi'.

वर्षाणि (varṣāṇi) - years

(noun)

Accusative, neuter, plural of varṣa

varṣa - year, rain, rainy season

Note: Indicates duration of time.

पञ्च (pañca) - five

(adjective)

Accusative, plural of pañcan

pañcan - five

Note: Modifies 'varṣāṇi' implicitly.

च (ca) - and

(indeclinable)

वने (vane) - in the forest

(noun)

Locative, neuter, singular of vana

vana - forest, wood, grove

प्रव्रज (pravraja) - go forth, depart

(verb)

2nd person , singular, active, imperative (loṭ) of pravraj

Imperative Active

Second person singular imperative form of root 'vraj' (to go) with prefix 'pra' (forth).

Prefix: pra

Root: vraj (class 1)

काकुत्स्थ (kākutstha) - O Rama (O Kakutstha (descendant of Kakutstha))

(proper noun)

Vocative, masculine, singular of kākutstha

kākutstha - descendant of Kakutstha, Rama

Patronymic derived from Kakutstha.

पितरम् (pitaram) - the father

(noun)

Accusative, masculine, singular of pitṛ

pitṛ - father

Note: Object of 'mocaya'.

मोचय (mocaya) - release, free, cause to abandon

(verb)

2nd person , singular, active, imperative (loṭ) of muc

Causative Imperative Active

Second person singular imperative form of the causative of root 'muc' (to release). 'Causative' implies 'cause to release'.

Root: muc (class 6)

अनृतात् (anṛtāt) - from falsehood, from untruth, from breaking one's word

(noun)

Ablative, neuter, singular of anṛta

anṛta - untruth, falsehood, lie, breaking of natural law (dharma)

Negative compound 'an' (not) + 'ṛta' (truth, cosmic order).

Compound type : Tatpuruṣa (an+ṛta)

• an – not, un-, without
  indeclinable
  Negative prefix used before vowels.
• ṛta – truth, cosmic order, divine law, righteousness
  noun (neuter)

Note: Indicates separation or cause.