योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-85, verse-22

पुंसश्छायां निजच्छाया प्रविष्टस्य शरीरकम् ।
यथाशु प्रविशत्येव प्रकृतिः पुरुषं तथा ॥ २२ ॥

puṃsaśchāyāṃ nijacchāyā praviṣṭasya śarīrakam ,
yathāśu praviśatyeva prakṛtiḥ puruṣaṃ tathā 22

22. puṃsaḥ chāyām nijacchāyā praviṣṭasya śarīrakam
yathā āśu praviśati eva prakṛtiḥ puruṣam tathā

22. yathā āśu nijacchāyā praviṣṭasya puṃsaḥ chāyām śarīrakam eva praviśati,
tathā prakṛtiḥ puruṣam

22. Just as a person's own shadow (nijacchāyā) quickly enters the body (śarīrakam) of one who has entered a shadow, so too does nature (prakṛti) enter the cosmic person (puruṣa).

Words meanings summery:

• पुंसः (puṁsaḥ) - of the cosmic person (puruṣa) or an individual soul (of a man, of a person, of a male)

• छायाम् (chāyām) - a shadow, representing an external projection or illusion (shadow, reflection, image, shade)

• निजच्छाया (nijacchāyā) - the shadow belonging to the person himself (one's own shadow, personal shadow)

• प्रविष्टस्य (praviṣṭasya) - of the person who has entered (a shadow) (of one who has entered, entered (genitive))

• शरीरकम् (śarīrakam) - the physical body (body (diminutive/affectionate or simply 'body'))

• यथा (yathā) - just as (introduces a simile) (as, just as, according to)

• आशु (āśu) - quickly, without delay (quickly, swiftly, immediately)

• प्रविशति (praviśati) - swiftly enters (enters, goes into)

• एव (eva) - indeed, certainly (only, just, indeed)

• प्रकृतिः (prakṛtiḥ) - the primordial nature (prakṛti) (nature, primordial matter)

• पुरुषम् (puruṣam) - the cosmic person (puruṣa), the conscious principle (person, man, cosmic person, spirit)

• तथा (tathā) - in the same way, similarly (so, thus, in that manner)

Words meanings and morphology

पुंसः (puṁsaḥ) - of the cosmic person (puruṣa) or an individual soul (of a man, of a person, of a male)

(noun)

Genitive, masculine, singular of puṃs

puṁs - man, person, male, human being

Note: Alternate form of puruṣa.

छायाम् (chāyām) - a shadow, representing an external projection or illusion (shadow, reflection, image, shade)

(noun)

Accusative, feminine, singular of chāyā

chāyā - shadow, shade, reflection, image, lustre, beauty, illusion

Note: Object of 'praviṣṭasya'.

निजच्छाया (nijacchāyā) - the shadow belonging to the person himself (one's own shadow, personal shadow)

(noun)

Nominative, feminine, singular of nijacchāyā

nijacchāyā - one's own shadow

From nija + chāyā

Compound type : karmadhāraya (nija+chāyā)

• nija – own, innate, personal, native
  adjective (feminine)
• chāyā – shadow, shade, reflection, image
  noun (feminine)

Note: Subject of praviśati.

प्रविष्टस्य (praviṣṭasya) - of the person who has entered (a shadow) (of one who has entered, entered (genitive))

(adjective)

Genitive, masculine, singular of praviṣṭa

praviṣṭa - entered, gone into, approached

past passive participle

Past passive participle from pra- + viś

Prefix: pra

Root: viś (class 6)

Note: Modifies 'puṃsaḥ'.

शरीरकम् (śarīrakam) - the physical body (body (diminutive/affectionate or simply 'body'))

(noun)

Accusative, neuter, singular of śarīraka

śarīraka - body, small body (diminutive)

From śarīra + ka (suffix)

Note: Object of 'praviśati'.

यथा (yathā) - just as (introduces a simile) (as, just as, according to)

(indeclinable)

Note: Correlative adverb.

आशु (āśu) - quickly, without delay (quickly, swiftly, immediately)

(indeclinable)

Note: Used as an adverb here.

प्रविशति (praviśati) - swiftly enters (enters, goes into)

(verb)

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

present active

Present active 3rd singular from root viś with prefix pra

Prefix: pra

Root: viś (class 6)

एव (eva) - indeed, certainly (only, just, indeed)

(indeclinable)

Note: An emphatic particle.

प्रकृतिः (prakṛtiḥ) - the primordial nature (prakṛti) (nature, primordial matter)

(noun)

Nominative, feminine, singular of prakṛti

prakṛti - nature, primary substance, origin, material cause, primordial matter

From pra- + kṛ + ti

Prefix: pra

Root: kṛ (class 8)

Note: Subject of the main clause.

पुरुषम् (puruṣam) - the cosmic person (puruṣa), the conscious principle (person, man, cosmic person, spirit)

(noun)

Accusative, masculine, singular of puruṣa

puruṣa - man, person, male, human being, spirit, the cosmic person, soul

Note: Object of the implied 'praviśati'.

तथा (tathā) - in the same way, similarly (so, thus, in that manner)

(indeclinable)

Note: Correlative adverb to yathā.