महाभारतः mahābhārataḥ - book-12, chapter-283, verse-15

तेन स्म ते गगनगाः सपुराः पातिताः क्षितौ ।
तिस्रोऽप्येकेन बाणेन देवाप्यायिततेजसा ॥१५॥

15. tena sma te gaganagāḥ sapurāḥ pātitāḥ kṣitau ,
tisro'pyekena bāṇena devāpyāyitatejasā.

15. tena sma te gaganagāḥ sapurāḥ pātitāḥ kṣitau
tisraḥ api ekena bāṇena devāpyāyitatejasā

15. sma tena devāpyāyitatejasā ekena bāṇena te
gaganagāḥ sapurāḥ tisraḥ api kṣitau pātitāḥ

15. Indeed, by him (Shiva), all three of those sky-moving cities, along with their inhabitants, were brought down to earth by a single arrow, whose immense power was augmented by the gods.

Words meanings summery:

• तेन (tena) - by him (Shiva) (by him, by that)

• स्म (sma) - indeed, certainly (particle indicating past action or emphasis)

• ते (te) - those (cities) (those, they)

• गगनगाः (gaganagāḥ) - sky-moving (cities) (sky-going, moving in the sky)

• सपुराः (sapurāḥ) - along with their cities (with cities, along with their cities)

• पातिताः (pātitāḥ) - brought down (to earth) (caused to fall, thrown down, felled)

• क्षितौ (kṣitau) - on the earth, on the ground

• तिस्रः (tisraḥ) - all three (cities) (three (feminine))

• अपि (api) - all (three) (also, even, too)

• एकेन (ekena) - by a single (arrow) (by one)

• बाणेन (bāṇena) - by arrow

• देवाप्यायिततेजसा (devāpyāyitatejasā) - by (an arrow) whose power was augmented by the gods (by (one) whose splendor/power is augmented by the gods)

Words meanings and morphology

तेन (tena) - by him (Shiva) (by him, by that)

(pronoun)

Instrumental, masculine, singular of tad

tad - that, he, she, it

स्म (sma) - indeed, certainly (particle indicating past action or emphasis)

(indeclinable)

ते (te) - those (cities) (those, they)

(pronoun)

Nominative, feminine, plural of tad

tad - that, he, she, it

गगनगाः (gaganagāḥ) - sky-moving (cities) (sky-going, moving in the sky)

(adjective)

Nominative, feminine, plural of gaganaga

gaganaga - sky-going, moving in the air, celestial

Compound type : tatpuruṣa (gagana+ga)

• gagana – sky, firmament, atmosphere
  noun (neuter)
• ga – going, moving
  adjective (masculine)
  Derived from root gam 'to go'
  Root: gam (class 1)

सपुराः (sapurāḥ) - along with their cities (with cities, along with their cities)

(adjective)

Nominative, feminine, plural of sapura

sapura - with cities, having towns, inhabited

Compound type : bahuvrīhi (sa+pura)

• sa – with, together with
  indeclinable
• pura – city, town, stronghold
  noun (neuter)

पातिताः (pātitāḥ) - brought down (to earth) (caused to fall, thrown down, felled)

(adjective)

Nominative, feminine, plural of pātita

pātita - caused to fall, thrown down, felled, made to descend

Past Passive Participle

Derived from the causative stem of root pat (pātayati)

Root: pat (class 1)

क्षितौ (kṣitau) - on the earth, on the ground

(noun)

Locative, feminine, singular of kṣiti

kṣiti - earth, ground, dwelling, abode

Root: kṣi (class 5)

तिस्रः (tisraḥ) - all three (cities) (three (feminine))

(numeral)

अपि (api) - all (three) (also, even, too)

(indeclinable)

एकेन (ekena) - by a single (arrow) (by one)

(numeral)

बाणेन (bāṇena) - by arrow

(noun)

Instrumental, masculine, singular of bāṇa

bāṇa - arrow

देवाप्यायिततेजसा (devāpyāyitatejasā) - by (an arrow) whose power was augmented by the gods (by (one) whose splendor/power is augmented by the gods)

(adjective)

Instrumental, masculine, singular of devāpyāyitatejas

devāpyāyitatejas - one whose splendor is augmented by the gods

Compound type : bahuvrīhi (deva+āpyāyita+tejas)

• deva – god, deity
  noun (masculine)
• āpyāyita – swelled, increased, nourished, strengthened
  adjective (masculine)
  Past Passive Participle
  Derived from root pyāy with prefix ā
  Prefix: ā
  Root: pyāy (class 1)
• tejas – splendor, power, energy, fiery energy
  noun (neuter)
  Root: tij (class 1)