वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-3, chapter-41, verse-39

पुरस्तादिह वातापिः परिभूय तपस्विनः ।
उदरस्थो द्विजान् हन्ति स्वगर्भो ऽश्वतरीमिव ॥३९॥

39. purastādiha vātāpiḥ paribhūya tapasvinaḥ ,
udarastho dvijān hanti svagarbho'śvatarīmiva.

39. purastāt iha vātāpiḥ paribhūya tapasvinaḥ
udarasthaḥ dvijān hanti svagarbhaḥ aśvatarīm iva

39. purastāt iha vātāpiḥ tapasvinaḥ paribhūya,
udarasthaḥ dvijān hanti,
svagarbhaḥ aśvatarīm iva

39. Here, in the past, Vātāpi would overpower ascetics (tapasvinaḥ) and kill Brahmins (dvijān) from within their bellies, just as a she-mule is killed by her own fetus.

Words meanings summery:

• पुरस्तात् (purastāt) - formerly, in the past, in front of

• इह (iha) - here, in this world, at this time

• वातापिः (vātāpiḥ) - Vātāpi

• परिभूय (paribhūya) - having overpowered, having conquered, having slighted

• तपस्विनः (tapasvinaḥ) - ascetics, devotees, hermits

• उदरस्थः (udarasthaḥ) - situated in the belly, residing in the stomach

• द्विजान् (dvijān) - Brahmins, twice-born ones

• हन्ति (hanti) - kills, strikes, slays

• स्वगर्भः (svagarbhaḥ) - his own fetus, his own embryo

• अश्वतरीम् (aśvatarīm) - she-mule

• इव (iva) - like, as, as if

Words meanings and morphology

पुरस्तात् (purastāt) - formerly, in the past, in front of

(indeclinable)

इह (iha) - here, in this world, at this time

(indeclinable)

वातापिः (vātāpiḥ) - Vātāpi

(proper noun)

Nominative, masculine, singular of vātāpi

vātāpi - Vātāpi (name of a demon brother of Ilvala)

परिभूय (paribhūya) - having overpowered, having conquered, having slighted

(indeclinable)

Prefix: pari

Root: bhū (class 1)

तपस्विनः (tapasvinaḥ) - ascetics, devotees, hermits

(noun)

Accusative, masculine, plural of tapasvin

tapasvin - ascetic, devotee, practicing austerity (tapas)

Derived from 'tapas' (austerity) with the possessive suffix '-vin'.

उदरस्थः (udarasthaḥ) - situated in the belly, residing in the stomach

(adjective)

Nominative, masculine, singular of udarastha

udarastha - situated in the belly, existing in the stomach

Compound type : Saptamī Tatpuruṣa (udara+stha)

• udara – belly, abdomen, inside
  noun (neuter)
• stha – standing, staying, situated, being in
  adjective (masculine)
  Derived from the root 'sthā' (to stand).
  Root: sthā (class 1)

द्विजान् (dvijān) - Brahmins, twice-born ones

(noun)

Accusative, masculine, plural of dvija

dvija - twice-born (a Brahmin, a bird, a tooth, a snake, a planet)

Compound of 'dvi' (twice) and 'ja' (born).

Compound type : Bahuvrīhi (dvi+ja)

• dvi – two, twice
  indeclinable
• ja – born, produced from
  adjective (masculine)
  Derived from root 'jan' (to be born).
  Root: jan (class 4)

हन्ति (hanti) - kills, strikes, slays

(verb)

3rd person , singular, active, Present (Laṭ) of han

Root: han (class 2)

स्वगर्भः (svagarbhaḥ) - his own fetus, his own embryo

(noun)

Nominative, masculine, singular of svagarbha

svagarbha - one's own fetus/embryo, own womb

Compound type : Ṣaṣṭhī Tatpuruṣa (sva+garbha)

• sva – own, one's own
  pronoun (masculine)
• garbha – fetus, embryo, womb, interior
  noun (masculine)

अश्वतरीम् (aśvatarīm) - she-mule

(noun)

Accusative, feminine, singular of aśvatarī

aśvatarī - she-mule

इव (iva) - like, as, as if

(indeclinable)