वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-46, verse-18

पतिव्रतात्वमास्थाय रामं कृत्वा सदा हृदि ।
श्रेयस्ते परमं देवि तथा कृत्वा भविष्यति ॥१८॥

18. pativratātvamāsthāya rāmaṃ kṛtvā sadā hṛdi ,
śreyaste paramaṃ devi tathā kṛtvā bhaviṣyati.

18. pativratātvam āsthāya rāmam kṛtvā sadā hṛdi
śreyaḥ te paramam devi tathā kṛtvā bhaviṣyati

18. devi pativratātvam āsthāya sadā rāmam hṛdi
kṛtvā tathā kṛtvā te paramam śreyaḥ bhaviṣyati

18. O goddess, by embracing the status of a devoted wife and always keeping Rama in your heart, your supreme welfare will thus be assured.

Words meanings summery:

• पतिव्रतात्वम् (pativratātvam) - the state of being a devoted wife, marital fidelity

• आस्थाय (āsthāya) - having adopted, having resorted to, having embraced

• रामम् (rāmam) - Rama

• कृत्वा (kṛtvā) - having kept (in the heart) (having done, having made, having placed)

• सदा (sadā) - always, ever, perpetually

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

• श्रेयः (śreyaḥ) - welfare, supreme good, prosperity

• ते (te) - your (referring to Sita) (to you, for you, your)

• परमम् (paramam) - supreme, highest, ultimate

• देवि (devi) - O goddess (referring to Sita) (O goddess, O divine one)

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

• कृत्वा (kṛtvā) - having done, having acted

• भविष्यति (bhaviṣyati) - will be, will become

Words meanings and morphology

पतिव्रतात्वम् (pativratātvam) - the state of being a devoted wife, marital fidelity

(noun)

Accusative, neuter, singular of pativratātva

pativratātva - state of being a devoted wife

Compound type : tatpurusha (pativratā+tva)

• pativratā – a devoted wife, a chaste woman
  noun (feminine)
• tva – suffix meaning 'nature of', 'state of', 'quality of'
  indeclinable
  suffix forming abstract nouns

आस्थाय (āsthāya) - having adopted, having resorted to, having embraced

(indeclinable)

absolutive

gerund/absolutive from verb sthā with prefix ā

Prefix: ā

Root: sthā (class 1)

रामम् (rāmam) - Rama

(proper noun)

Accusative, masculine, singular of rāma

rāma - Rama (proper name of the protagonist of Ramayana)

कृत्वा (kṛtvā) - having kept (in the heart) (having done, having made, having placed)

(indeclinable)

absolutive

gerund/absolutive from verb kṛ

Root: kṛ (class 8)

सदा (sadā) - always, ever, perpetually

(indeclinable)

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

(noun)

Locative, neuter, singular of hṛd

hṛd - heart, mind, soul

श्रेयः (śreyaḥ) - welfare, supreme good, prosperity

(noun)

Nominative, neuter, singular of śreyas

śreyas - welfare, supreme good, excellence, bliss

ते (te) - your (referring to Sita) (to you, for you, your)

(pronoun)

Dative, singular of yuṣmad

yuṣmad - you

Note: Enclitic form of dative or genitive singular.

परमम् (paramam) - supreme, highest, ultimate

(adjective)

Nominative, neuter, singular of parama

parama - supreme, highest, ultimate, best

Note: Agrees with 'śreyaḥ'.

देवि (devi) - O goddess (referring to Sita) (O goddess, O divine one)

(noun)

Vocative, feminine, singular of devī

devī - goddess, divine lady

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

(indeclinable)

कृत्वा (kṛtvā) - having done, having acted

(indeclinable)

absolutive

gerund/absolutive from verb kṛ

Root: kṛ (class 8)

भविष्यति (bhaviṣyati) - will be, will become

(verb)

3rd person , singular, active, future (lṛṭ) of bhū

future tense

3rd person singular, active voice

Root: bhū (class 1)