योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-25, verse-25

पातालगामिमार्गेण वलितां भयदात्मना ।
एतस्मात्खलु सर्वस्मात्ततो दशगुणोच्चया ॥ २५ ॥

pātālagāmimārgeṇa valitāṃ bhayadātmanā ,
etasmātkhalu sarvasmāttato daśaguṇoccayā 25

25. pātālagāmimārgeṇa valitām bhayadātmanā
etasmāt khalu sarvasmāt tataḥ daśaguṇoccayā

25. valitām pātālagāmimārgeṇa bhayadātmanā,
khalu etasmāt sarvasmāt tataḥ daśaguṇoccayā

25. This (trench or region) is encompassed by a path leading to the netherworlds (pātāla), having a terrifying nature; and indeed, from all of this (entire lower region described thus far), there is a layer (or space) ten times greater than that.

Words meanings summery:

• पातालगामिमार्गेण (pātālagāmimārgeṇa) - by the path leading down into the netherworlds (pātāla) (by the path going to pātāla)

• वलिताम् (valitām) - encompassed (referring to the region/trench previously described) (encompassed, surrounded, bent, curved)

• भयदात्मना (bhayadātmanā) - by its terrifying nature (describing the trench or path) (by a fearful nature, by a terrifying essence)

• एतस्मात् (etasmāt) - from this (entire previous description or region) (from this)

• खलु (khalu) - indeed, certainly, surely

• सर्वस्मात् (sarvasmāt) - from all this (previous description or phenomena) (from all, from everything)

• ततः (tataḥ) - from that (previous point or layer) (from that, thence, beyond that, after that)

• दशगुणोच्चया (daśaguṇoccayā) - by a (layer/region) ten times greater in extent/height (than the previous) (by a ten times higher/greater accumulation or height)

Words meanings and morphology

पातालगामिमार्गेण (pātālagāmimārgeṇa) - by the path leading down into the netherworlds (pātāla) (by the path going to pātāla)

(noun)

Instrumental, masculine, singular of pātālagāmimārga

pātālagāmimārga - path going to pātāla

Compound of pātāla + gāmin (from gam) + mārga

Compound type : tatpuruṣa (pātāla+gāmin+mārga)

• pātāla – netherworld, infernal regions
  noun (neuter)
• gāmin – going, moving
  adjective (masculine)
  agent noun
  From root 'gam' (to go) with ṇini suffix.
  Root: gam (class 1)
• mārga – path, way, road
  noun (masculine)

वलिताम् (valitām) - encompassed (referring to the region/trench previously described) (encompassed, surrounded, bent, curved)

(adjective)

Accusative, feminine, singular of valita

valita - encompassed, surrounded, bent, curved

Past Passive Participle

From root 'val' (to turn, move to and fro, encompass)

Root: val (class 1)

Note: Acts as an adjective to an implicit feminine noun or is an unusual agreement for 'valaya'.

भयदात्मना (bhayadātmanā) - by its terrifying nature (describing the trench or path) (by a fearful nature, by a terrifying essence)

(adjective)

Instrumental, masculine, singular of bhayadātman

bhayadātman - having a fearful nature, terrifying

Compound of bhaya-da (fear-giving) + ātman (nature)

Compound type : bahuvrīhi/tatpuruṣa (bhaya+da+ātman)

• bhaya – fear, dread
  noun (neuter)
  Root: bhī (class 3)
• da – giving, granting
  adjective (masculine)
  agent noun
  From root 'dā' (to give)
  Root: dā (class 3)
• ātman – self, soul, nature, essence
  noun (masculine)

Note: Modifies 'pātālagāmimārgeṇa'.

एतस्मात् (etasmāt) - from this (entire previous description or region) (from this)

(pronoun)

Ablative, masculine, singular of etad

etad - this, this here

खलु (khalu) - indeed, certainly, surely

(indeclinable)

सर्वस्मात् (sarvasmāt) - from all this (previous description or phenomena) (from all, from everything)

(pronoun)

Ablative, masculine, singular of sarva

sarva - all, every, whole

ततः (tataḥ) - from that (previous point or layer) (from that, thence, beyond that, after that)

(indeclinable)

दशगुणोच्चया (daśaguṇoccayā) - by a (layer/region) ten times greater in extent/height (than the previous) (by a ten times higher/greater accumulation or height)

(adjective)

Instrumental, feminine, singular of daśaguṇoccaya

daśaguṇoccaya - ten times increased, ten times higher

Compound of daśaguṇa (tenfold) + uccaya (accumulation/height). Used adjectivally in fem. instrumental.

Compound type : tatpuruṣa (daśaguṇa+uccaya)

• daśaguṇa – tenfold, ten times
  adjective (masculine)
  Compound of daśa (ten) + guṇa (multiple)
• uccaya – heap, accumulation, height, increase
  noun (masculine)
  From ud-ci (to collect, heap up)
  Prefix: ud
  Root: ci (class 5)

Note: Modifies an implicit feminine noun.