महाभारतः mahābhārataḥ - book-3, chapter-186, verse-61

ततः स पृथिवीं भित्त्वा समाविश्य रसातलम् ।
देवदानवयक्षाणां भयं जनयते महत् ॥६१॥

61. tataḥ sa pṛthivīṁ bhittvā samāviśya rasātalam ,
devadānavayakṣāṇāṁ bhayaṁ janayate mahat.

61. tataḥ saḥ pṛthivīm bhittvā samāviśya rasātalam
devadānavayakṣāṇām bhayam janayate mahat

61. Then, splitting the earth and entering the netherworld (rasātala), it generates great fear among the gods, demons, and yakshas.

Words meanings summery:

• ततः (tataḥ) - then, thereupon, from that

• सः (saḥ) - referring to the destructive force (wind/fire) (he, it, that)

• पृथिवीम् (pṛthivīm) - earth, ground

• भित्त्वा (bhittvā) - having split, having pierced, having broken

• समाविश्य (samāviśya) - having entered, having pervaded, having taken possession of

• रसातलम् (rasātalam) - the netherworld, the lowest of the seven underworlds

• देवदानवयक्षाणाम् (devadānavayakṣāṇām) - of gods, demons, and yakshas

• भयम् (bhayam) - fear, dread, danger

• जनयते (janayate) - generates, causes, produces

• महत् (mahat) - great, vast, mighty

Words meanings and morphology

ततः (tataḥ) - then, thereupon, from that

(indeclinable)

सः (saḥ) - referring to the destructive force (wind/fire) (he, it, that)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

पृथिवीम् (pṛthivīm) - earth, ground

(noun)

Accusative, feminine, singular of pṛthivī

pṛthivī - earth, the Earth goddess, ground

भित्त्वा (bhittvā) - having split, having pierced, having broken

(indeclinable)

absolutive

Derived from root √bhid (to split, break) with suffix -tvā.

Root: bhid (class 7)

समाविश्य (samāviśya) - having entered, having pervaded, having taken possession of

(indeclinable)

absolutive

Derived from root √viś (to enter) with prefixes sam- and ā- and suffix -ya.

Prefixes: sam+ā

Root: viś (class 6)

रसातलम् (rasātalam) - the netherworld, the lowest of the seven underworlds

(proper noun)

Accusative, neuter, singular of rasātala

rasātala - the netherworld, the lowest of the seven planetary systems below the earth

देवदानवयक्षाणाम् (devadānavayakṣāṇām) - of gods, demons, and yakshas

(noun)

Genitive, plural of devadānavayakṣa

devadānavayakṣa - gods, demons (dānava), and yakshas (celestial beings)

Compound type : dvandva (deva+dānava+yakṣa)

• deva – god, deity, divine being
  noun (masculine)
• dānava – demon, son of Danu, giant
  noun (masculine)
• yakṣa – yaksha, a class of nature-spirits, semi-divine beings
  noun (masculine)

भयम् (bhayam) - fear, dread, danger

(noun)

Accusative, neuter, singular of bhaya

bhaya - fear, dread, alarm, danger

जनयते (janayate) - generates, causes, produces

(verb)

3rd person , singular, middle, present (lat) of jan

causative present

Causative stem janaya- from root √jan (to be born).

Root: jan (class 4)

महत् (mahat) - great, vast, mighty

(adjective)

Accusative, neuter, singular of mahat

mahat - great, large, mighty, vast, important

Note: Agrees with 'bhayam'.