योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-42, verse-25

आत्मेच्छयैव घनतां समुपागतान्तरात्मेच्छयैव तनुतामुपयाति काले ।
संसारजालरचनेयमनन्तमायाज्वालेह वातवलयादिव पावकस्य ॥ २५ ॥

ātmecchayaiva ghanatāṃ samupāgatāntarātmecchayaiva tanutāmupayāti kāle ,
saṃsārajālaracaneyamanantamāyājvāleha vātavalayādiva pāvakasya 25

25. ātma-icchayā eva ghanatām samupāgatā
antarātma-icchayā eva tanutām upayāti
kāle saṃsāra-jāla-racanā iyam ananta-māyā-jvālā
iha vāta-valayāt iva pāvakasya

25. iyam saṃsāra-jāla-racanā ātma-icchayā
eva ghanatām samupāgatā kāle antarātma-icchayā
eva tanutām upayāti iha
ananta-māyā-jvālā pāvakasya vāta-valayāt iva

25. This formation of the net of worldly existence (saṃsāra), which becomes dense solely by the will of the Self (ātman) and in time becomes subtle solely by the will of the inner Self (ātman), is indeed the flame of endless illusion (māyā), similar to fire emerging from a whirlwind.

Words meanings summery:

• आत्म-इच्छया (ātma-icchayā) - by the will of the Self (ātman) (by the will of the Self; by one's own will)

• एव (eva) - alone; solely (alone; only; indeed; certainly)

• घनताम् (ghanatām) - density (density; compactness; solidity)

• समुपागता (samupāgatā) - attained; became (attained; reached; approached; acquired)

• अन्तरात्म-इच्छया (antarātma-icchayā) - by the will of the inner Self (ātman) (by the will of the inner Self; by the will of the individual soul)

• एव (eva) - alone; solely (alone; only; indeed; certainly)

• तनुताम् (tanutām) - subtlety (thinness; subtlety; slenderness)

• उपयाति (upayāti) - attains; becomes (approaches; attains; undergoes; becomes)

• काले (kāle) - in time; in due course (in time; at the proper time; in due course)

• संसार-जाल-रचना (saṁsāra-jāla-racanā) - the formation of the net of worldly existence (saṃsāra) (the creation/formation of the net of worldly existence)

• इयम् (iyam) - this (referring to saṃsāra-jāla-racanā) (this (feminine))

• अनन्त-माया-ज्वाला (ananta-māyā-jvālā) - the flame of endless illusion (māyā) (the flame of endless illusion)

• इह (iha) - indeed (here; in this world; in this case; indeed)

• वात-वलयात् (vāta-valayāt) - from a whirlwind (from a circle of wind; from a whirlwind)

• इव (iva) - like; similar to (like; as; as if)

• पावकस्य (pāvakasya) - of fire (of fire; of the purifier)

Words meanings and morphology

आत्म-इच्छया (ātma-icchayā) - by the will of the Self (ātman) (by the will of the Self; by one's own will)

(noun)

Instrumental, feminine, singular of ātma-icchā

ātma-icchā - will of the Self; one's own will

Compound type : tatpurusha (ātman+icchā)

• ātman – Self; soul; essence
  noun (masculine)
• icchā – wish; desire; will
  noun (feminine)
  Derived from root iṣ (to wish).
  Root: iṣ (class 4)

एव (eva) - alone; solely (alone; only; indeed; certainly)

(indeclinable)

घनताम् (ghanatām) - density (density; compactness; solidity)

(noun)

Accusative, feminine, singular of ghanatā

ghanatā - density; solidity; thickness

Derived from ghana (dense) + suffix tā.

समुपागता (samupāgatā) - attained; became (attained; reached; approached; acquired)

(adjective)

Nominative, feminine, singular of samupāgata

samupāgata - arrived at; attained; approached

Past Passive Participle

Root gam with prefixes sam and upa, suffix kta.

Prefixes: sam+upa

Root: gam (class 1)

अन्तरात्म-इच्छया (antarātma-icchayā) - by the will of the inner Self (ātman) (by the will of the inner Self; by the will of the individual soul)

(noun)

Instrumental, feminine, singular of antarātma-icchā

antarātma-icchā - will of the inner Self; will of the individual soul

Compound type : tatpurusha (antarātman+icchā)

• antarātman – inner Self; individual soul; conscience
  noun (masculine)
  antar (internal) + ātman (Self)
• icchā – wish; desire; will
  noun (feminine)
  Derived from root iṣ (to wish).
  Root: iṣ (class 4)

एव (eva) - alone; solely (alone; only; indeed; certainly)

(indeclinable)

तनुताम् (tanutām) - subtlety (thinness; subtlety; slenderness)

(noun)

Accusative, feminine, singular of tanutā

tanutā - thinness; subtlety; slenderness

Derived from tanu (thin, subtle) + suffix tā.

उपयाति (upayāti) - attains; becomes (approaches; attains; undergoes; becomes)

(verb)

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

Present active indicative

Root yā with prefix upa.

Prefix: upa

Root: yā (class 2)

काले (kāle) - in time; in due course (in time; at the proper time; in due course)

(noun)

Locative, masculine, singular of kāla

kāla - time; period; appropriate time

संसार-जाल-रचना (saṁsāra-jāla-racanā) - the formation of the net of worldly existence (saṃsāra) (the creation/formation of the net of worldly existence)

(noun)

Nominative, feminine, singular of saṃsāra-jāla-racanā

saṁsāra-jāla-racanā - creation of the net of transmigration; formation of the snare of rebirth

Compound type : tatpurusha (saṃsāra+jāla+racanā)

• saṃsāra – transmigration; cycle of rebirth; worldly existence
  noun (masculine)
  Derived from root sṛ (to flow, move) with prefix sam.
  Prefix: sam
  Root: sṛ (class 1)
• jāla – net; snare; illusion
  noun (neuter)
• racanā – creation; formation; arrangement
  noun (feminine)
  Derived from root rac (to arrange, create).
  Root: rac (class 10)

Note: Subject of the sentence.

इयम् (iyam) - this (referring to saṃsāra-jāla-racanā) (this (feminine))

(pronoun)

Nominative, feminine, singular of idam

idam - this; here (demonstrative pronoun)

Feminine nominative singular form of idam.

अनन्त-माया-ज्वाला (ananta-māyā-jvālā) - the flame of endless illusion (māyā) (the flame of endless illusion)

(noun)

Nominative, feminine, singular of ananta-māyā-jvālā

ananta-māyā-jvālā - flame of infinite illusion

Compound type : tatpurusha (ananta+māyā+jvālā)

• ananta – infinite; endless; boundless
  adjective
  an (not) + anta (end).
• māyā – illusion; delusion; magical power; creative power of brahman
  noun (feminine)
  From root mā (to measure, create, display).
  Root: mā (class 2)
• jvālā – flame; blaze
  noun (feminine)
  Root: jval (class 1)

Note: Predicate nominative.

इह (iha) - indeed (here; in this world; in this case; indeed)

(indeclinable)

Adverb.

वात-वलयात् (vāta-valayāt) - from a whirlwind (from a circle of wind; from a whirlwind)

(noun)

Ablative, masculine, singular of vāta-valaya

vāta-valaya - circle of wind; whirlwind

Compound type : tatpurusha (vāta+valaya)

• vāta – wind; air
  noun (masculine)
  From root vā (to blow).
  Root: vā (class 2)
• valaya – circle; ring; circumference
  noun (masculine)
  From root val (to move, turn).
  Root: val (class 1)

इव (iva) - like; similar to (like; as; as if)

(indeclinable)

पावकस्य (pāvakasya) - of fire (of fire; of the purifier)

(noun)

Genitive, masculine, singular of pāvaka

pāvaka - fire; purifier; sacred fire

From root pū (to purify), with suffix aka.

Root: pū (class 1)