योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-92, verse-9

प्रममार्ज वनास्थां तां कृतः सुदृढनिश्चयः ।
प्रावृडोघस्तटगतां रजोलेखामिवात्मना ॥ ९ ॥

pramamārja vanāsthāṃ tāṃ kṛtaḥ sudṛḍhaniścayaḥ ,
prāvṛḍoghastaṭagatāṃ rajolekhāmivātmanā 9

9. pra-mamārja vana-āsthām tām kṛtaḥ su-dṛḍha-niścayaḥ
prāvṛṭ-oghaḥ taṭa-gatām rajaḥ-lekhām iva ātmanā

9. kṛtaḥ su-dṛḍha-niścayaḥ (bhūtvā),
(saḥ) tām vana-āsthām pra-mamārja,
(yathā) prāvṛṭ-oghaḥ ātmanā taṭa-gatām rajaḥ-lekhām iva (pra-mārjati).

9. Having made a very firm resolve, Śikhidhvaja completely wiped away his attachment to the forest, just as a monsoon flood, situated on the riverbank, effortlessly washes away a line of dust by its own power (ātman).

Words meanings summery:

• प्र-ममार्ज (pra-mamārja) - he (Śikhidhvaja) completely wiped away (his attachment) (he wiped away, removed completely, cleaned thoroughly)

• वन-आस्थाम् (vana-āsthām) - his attachment to the forest (attachment to the forest, dwelling in the forest)

• ताम् (tām) - that (attachment) (that (feminine))

• कृतः (kṛtaḥ) - having made (a firm resolve) (done, made, performed; having done, having made)

• सु-दृढ-निश्चयः (su-dṛḍha-niścayaḥ) - having a very firm resolve (one whose resolve is very firm, having a very firm determination)

• प्रावृट्-ओघः (prāvṛṭ-oghaḥ) - a monsoon flood (a flood of the rainy season, monsoon flood)

• तट-गताम् (taṭa-gatām) - situated on the riverbank (referring to the line of dust) (standing/gone to the bank, situated on the bank)

• रजः-लेखाम् (rajaḥ-lekhām) - a line of dust

• इव (iva) - just as (like, as, as if)

• आत्मना (ātmanā) - by its own power/nature (referring to the flood) (by the self, by oneself, by its nature/essence)

Words meanings and morphology

प्र-ममार्ज (pra-mamārja) - he (Śikhidhvaja) completely wiped away (his attachment) (he wiped away, removed completely, cleaned thoroughly)

(verb)

3rd person , singular, active, perfect (lit) of pra-mṛj

Perfect active

From root `mṛj` (2nd class, `mārṣṭi`) with prefix `pra-`. `mamārja` is the perfect tense form.

Prefix: pra

Root: mṛj (class 2)

वन-आस्थाम् (vana-āsthām) - his attachment to the forest (attachment to the forest, dwelling in the forest)

(noun)

Accusative, feminine, singular of vana-āsthā

vana-āsthā - dwelling in a forest, residence in a forest; attachment to a forest

Compound noun, accusative singular.

Compound type : tatpuruṣa (vana+āsthā)

• vana – forest, wood, grove
  noun (neuter)
• āsthā – dwelling, station, position; trust, reverence, attachment
  noun (feminine)
  From `ā-sthā` root `sthā` with prefix `ā`.
  Prefix: ā
  Root: sthā (class 1)

Note: Object of `pra-mamārja`.

ताम् (tām) - that (attachment) (that (feminine))

(pronoun)

Accusative, feminine, singular of tad

tad - that, this

Accusative singular feminine of `tad`.

कृतः (kṛtaḥ) - having made (a firm resolve) (done, made, performed; having done, having made)

(participle)

Nominative, masculine, singular of kṛta

kṛta - done, made, performed; prepared; past action

Past Passive Participle

From root `kṛ` (to do, make) + `kta` suffix.

Root: kṛ (class 8)

सु-दृढ-निश्चयः (su-dṛḍha-niścayaḥ) - having a very firm resolve (one whose resolve is very firm, having a very firm determination)

(adjective)

Nominative, masculine, singular of su-dṛḍha-niścaya

su-dṛḍha-niścaya - very firm resolve/determination

Compound. `su-dṛḍha` (very firm) + `niścaya` (resolve).

Compound type : bahuvrīhi (su+dṛḍha+niścaya)

• su – good, well, excellent, very
  indeclinable
• dṛḍha – firm, strong, solid, resolute
  adjective (masculine)
  Root: dṛh (class 1)
• niścaya – determination, resolve, certainty, conviction
  noun (masculine)
  From `ni-ci` (to perceive, determine).
  Prefix: ni
  Root: ci (class 5)

Note: Qualifies Śikhidhvaja; implies 'he who has a very firm resolve'.

प्रावृट्-ओघः (prāvṛṭ-oghaḥ) - a monsoon flood (a flood of the rainy season, monsoon flood)

(noun)

Nominative, masculine, singular of prāvṛṭ-ogha

prāvṛṭ-ogha - a flood/torrent of the rainy season

Compound.

Compound type : ṣaṣṭhī-tatpuruṣa (prāvṛṭ+ogha)

• prāvṛṭ – rainy season, monsoon
  noun (feminine)
• ogha – flood, torrent, current; mass, heap
  noun (masculine)

Note: Subject of the simile.

तट-गताम् (taṭa-gatām) - situated on the riverbank (referring to the line of dust) (standing/gone to the bank, situated on the bank)

(participle)

Accusative, feminine, singular of taṭa-gatā

taṭa-gatā - gone to a bank, standing on a bank, situated on the bank

Past Passive Participle (from `gam` with `kta`)

Compound. `taṭa` (bank) + `gatā` (gone).

Compound type : tatpuruṣa (taṭa+gatā)

• taṭa – bank, shore, river bank
  noun (masculine)
• gatā – gone, arrived at, situated
  participle (feminine)
  Past Passive Participle
  From root `gam` (to go) + `kta` suffix.
  Root: gam (class 1)

Note: Qualifies `rajaḥ-lekhām`.

रजः-लेखाम् (rajaḥ-lekhām) - a line of dust

(noun)

Accusative, feminine, singular of rajaḥ-lekhā

rajaḥ-lekhā - a line of dust, a streak of dust

Compound noun, accusative singular.

Compound type : ṣaṣṭhī-tatpuruṣa (rajas+lekhā)

• rajas – dust, pollen; impurity; the quality of passion/activity (guṇa)
  noun (neuter)
• lekhā – line, streak, drawing, writing
  noun (feminine)

Note: Object of the implied verb in the simile.

इव (iva) - just as (like, as, as if)

(indeclinable)

Particle introducing a simile.

आत्मना (ātmanā) - by its own power/nature (referring to the flood) (by the self, by oneself, by its nature/essence)

(noun)

Instrumental, masculine, singular of ātman

ātman - self, soul, spirit, essence, nature, mind, life

Instrumental singular of `ātman`.

Root: an (class 2)

Note: Denotes agency or inherent quality.