वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-3, chapter-18, verse-20

मनोरथो ऽयमिष्टो ऽस्या भगिन्या मम राक्षसाः ।
शीघ्रं संपद्यतां गत्वा तौ प्रमथ्य स्वतेजसा ॥२०॥

20. manoratho'yamiṣṭo'syā bhaginyā mama rākṣasāḥ ,
śīghraṃ saṃpadyatāṃ gatvā tau pramathya svatejasā.

20. manorathaḥ ayam iṣṭaḥ asyā bhaginyā mama rākṣasāḥ
| śīghram sampadyatām gatvā tau pramathya svatejasā

20. rāksāsāḥ ayam manorathaḥ asyā mama bhaginyā iṣṭaḥ
tau gatvā svatejasā pramathya śīghram sampadyatām

20. O Rākṣasas, this is the cherished desire of this sister of mine. Go quickly and crush those two with your own power, and let it be accomplished.

Words meanings summery:

• मनोरथः (manorathaḥ) - cherished desire (desire, wish of the mind)

• अयम् (ayam) - this (masculine)

• इष्टः (iṣṭaḥ) - cherished (by the sister) (wished, desired, cherished)

• अस्या (asyā) - of this (Śūrpaṇakhā) (of this (feminine))

• भगिन्या (bhaginyā) - of the sister (of the sister, by the sister)

• मम (mama) - my, of me

• राक्षसाः (rākṣasāḥ) - O Rākṣasas (demons)

• शीघ्रम् (śīghram) - quickly, swiftly

• सम्पद्यताम् (sampadyatām) - let it be accomplished, let it come to pass

• गत्वा (gatvā) - having gone

• तौ (tau) - those two (Rāma and Lakṣmaṇa) (those two)

• प्रमथ्य (pramathya) - having crushed, having destroyed

• स्वतेजसा (svatejasā) - by your own power, by your own might

Words meanings and morphology

मनोरथः (manorathaḥ) - cherished desire (desire, wish of the mind)

(noun)

Nominative, masculine, singular of manoratha

manoratha - wish, desire, mental object, purpose

Compound of 'manas' (mind) and 'ratha' (chariot/desire).

Compound type : tatpuruṣa (manas+ratha)

• manas – mind, intellect, thought
  noun (neuter)
• ratha – chariot, car, desire (figurative)
  noun (masculine)

अयम् (ayam) - this (masculine)

(pronoun)

Nominative, masculine, singular of idam

idam - this, this one

इष्टः (iṣṭaḥ) - cherished (by the sister) (wished, desired, cherished)

(adjective)

Nominative, masculine, singular of iṣṭa

iṣṭa - wished, desired, liked, beloved, sacred, sacrificed

Past Passive Participle

Past passive participle of root 'iṣ' (to wish) or 'yaj' (to sacrifice). Context implies 'wished/desired'.

Root: iṣ (class 6)

अस्या (asyā) - of this (Śūrpaṇakhā) (of this (feminine))

(pronoun)

Genitive, feminine, singular of idam

idam - this, this one

भगिन्या (bhaginyā) - of the sister (of the sister, by the sister)

(noun)

Genitive, feminine, singular of bhaginī

bhaginī - sister

मम (mama) - my, of me

(pronoun)

Genitive, singular of asmad

asmad - I, me

राक्षसाः (rākṣasāḥ) - O Rākṣasas (demons)

(noun)

Vocative, masculine, plural of rākṣasa

rākṣasa - demon, Rākṣasa (a class of mythical beings)

शीघ्रम् (śīghram) - quickly, swiftly

(indeclinable)

Can also function as an adverb in neuter accusative singular.

Note: Used adverbially

सम्पद्यताम् (sampadyatām) - let it be accomplished, let it come to pass

(verb)

3rd person , singular, middle, imperative (loṭ) of sampad

Prefix: sam

Root: pad (class 4)

गत्वा (gatvā) - having gone

(indeclinable)

absolutive

Indeclinable participle (gerund) from root 'gam' with -tvā suffix.

Root: gam (class 1)

तौ (tau) - those two (Rāma and Lakṣmaṇa) (those two)

(pronoun)

Accusative, masculine, dual of tad

tad - that, those

प्रमथ्य (pramathya) - having crushed, having destroyed

(indeclinable)

absolutive

Indeclinable participle (gerund) from root 'math/manth' with prefix 'pra' and -ya suffix.

Prefix: pra

Root: manth (class 9)

स्वतेजसा (svatejasā) - by your own power, by your own might

(noun)

Instrumental, neuter, singular of svatejas

svatejas - one's own splendor, inherent power, personal energy

Compound of 'sva' (one's own) and 'tejas' (splendor/power).

Compound type : karmadhāraya (sva+tejas)

• sva – one's own, self, own
  pronoun
• tejas – splendor, power, energy, fiery energy, might
  noun (neuter)