वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-25, verse-25

मातृष्वसुरथास्माकं सा कन्या चानलोद्भवा ।
भवत्यस्माकमेषा वै भ्रातॄणां धर्मतः स्वसा ॥२५॥

25. mātṛṣvasurathāsmākaṃ sā kanyā cānalodbhavā ,
bhavatyasmākameṣā vai bhrātṝṇāṃ dharmataḥ svasā.

25. mātṛṣvasuḥ atha asmākam sā kanyā ca analodbhavā
bhavati asmākam eṣā vai bhrātṝṇām dharmataḥ svasā

25. atha asmākam mātṛṣvasuḥ sā analodbhavā kanyā ca
eṣā vai asmākam bhrātṝṇām dharmataḥ svasā bhavati

25. And that girl, born from Anala, is also the daughter of our maternal aunt. Indeed, she is considered a sister to us brothers by familial custom (dharma).

Words meanings summery:

• मातृष्वसुः (mātṛṣvasuḥ) - of the maternal aunt

• अथ (atha) - then, now, and

• अस्माकम् (asmākam) - our, of us

• सा (sā) - she, that (feminine)

• कन्या (kanyā) - girl, maiden, daughter

• च (ca) - and, also

• अनलोद्भवा (analodbhavā) - born from Anala, fire-born

• भवति (bhavati) - she is, she becomes

• अस्माकम् (asmākam) - our, of us

• एषा (eṣā) - this (feminine)

• वै (vai) - indeed, truly, certainly

• भ्रातॄणाम् (bhrātṝṇām) - of the brothers

• धर्मतः (dharmataḥ) - by familial custom or established social norm (dharma) (by (dharma) natural law, by custom, according to virtue)

• स्वसा (svasā) - sister

Words meanings and morphology

मातृष्वसुः (mātṛṣvasuḥ) - of the maternal aunt

(noun)

Genitive, feminine, singular of mātṛṣvasṛ

mātṛṣvasṛ - maternal aunt (mother's sister)

Compound type : tatpurusha (mātṛ+svasṛ)

• mātṛ – mother
  noun (feminine)
• svasṛ – sister
  noun (feminine)

अथ (atha) - then, now, and

(indeclinable)

अस्माकम् (asmākam) - our, of us

(pronoun)

Genitive, plural of aham

aham - I

सा (sā) - she, that (feminine)

(pronoun)

Nominative, feminine, singular of tad

tad - that, she, it

कन्या (kanyā) - girl, maiden, daughter

(noun)

Nominative, feminine, singular of kanyā

kanyā - girl, maiden, daughter, virgin

च (ca) - and, also

(indeclinable)

अनलोद्भवा (analodbhavā) - born from Anala, fire-born

(adjective)

Nominative, feminine, singular of analodbhava

analodbhava - born from fire; born from Anala (a proper name, often a deity or ancestor)

Compound type : tatpurusha (anala+udbhava)

• anala – fire, name of one of the eight Vasus, name of a Rākṣasa
  noun (masculine)
• udbhava – origin, birth, production, born from
  noun (masculine)

भवति (bhavati) - she is, she becomes

(verb)

3rd person , singular, active, present (laṭ) of bhū

Root: bhū (class 1)

अस्माकम् (asmākam) - our, of us

(pronoun)

Genitive, plural of aham

aham - I

एषा (eṣā) - this (feminine)

(pronoun)

Nominative, feminine, singular of etad

etad - this

वै (vai) - indeed, truly, certainly

(indeclinable)

भ्रातॄणाम् (bhrātṝṇām) - of the brothers

(noun)

Genitive, masculine, plural of bhrātṛ

bhrātṛ - brother

धर्मतः (dharmataḥ) - by familial custom or established social norm (dharma) (by (dharma) natural law, by custom, according to virtue)

(indeclinable)

Derived from 'dharma' with the suffix '-tas'.

Note: dharma is a key concept.

स्वसा (svasā) - sister

(noun)

Nominative, feminine, singular of svasṛ

svasṛ - sister