योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-73, verse-5

सर्वेषामान्त्रतन्त्रीणां स्नायुमेदोवसासृजाम् ।
रन्ध्रेण पक्षिणेवान्तर्निलीनं मलिनात्मनाम् ॥ ५ ॥

sarveṣāmāntratantrīṇāṃ snāyumedovasāsṛjām ,
randhreṇa pakṣiṇevāntarnilīnaṃ malinātmanām 5

5. sarveṣām āntratantrīṇām snāyumedovasāsṛjām
randhreṇa pakṣiṇā iva antarnilīnam malinātmanām

5. sarveṣām āntratantrīṇām snāyumedovasāsṛjām
malinātmanām randhreṇa pakṣiṇā iva antarnilīnam

5. Through an opening among all the intestinal vessels, sinews, fat, marrow, and blood of those with impure souls (ātman), she concealed herself within, just like a bird.

Words meanings summery:

• सर्वेषाम् (sarveṣām) - of all

• आन्त्रतन्त्रीणाम् (āntratantrīṇām) - of the intestinal vessels/strings

• स्नायुमेदोवसासृजाम् (snāyumedovasāsṛjām) - of sinews, fat, marrow, and blood

• रन्ध्रेण (randhreṇa) - through a hole, through an opening

• पक्षिणा (pakṣiṇā) - like a bird (implied with iva) (by a bird)

• इव (iva) - like, as, as if

• अन्तर्निलीनम् (antarnilīnam) - (she was) hidden inside (hidden within, concealed inside)

• मलिनात्मनाम् (malinātmanām) - of the persons whose bodies were entered (of those with impure souls, of the wicked)

Words meanings and morphology

सर्वेषाम् (sarveṣām) - of all

(pronoun)

Genitive, masculine, plural of sarva

sarva - all, every, whole

Note: Agrees with 'āntratantrīṇām', 'snāyumedovasāsṛjām', 'malinātmanām'.

आन्त्रतन्त्रीणाम् (āntratantrīṇām) - of the intestinal vessels/strings

(noun)

Genitive, feminine, plural of āntratantrī

āntratantrī - intestinal vessel, intestinal string

Compound type : tatpuruṣa (āntra+tantrī)

• āntra – intestine, gut
  noun (neuter)
• tantrī – string, cord, wire, nerve, vein
  noun (feminine)

स्नायुमेदोवसासृजाम् (snāyumedovasāsṛjām) - of sinews, fat, marrow, and blood

(noun)

Genitive, masculine, plural of snāyumedovasāsṛj

snāyumedovasāsṛj - sinews, fat, marrow, and blood

Dvanda compound of snāyu (sinew), meda (fat), vasā (marrow/fat), asṛj (blood).

Compound type : dvandva (snāyu+meda+vasā+asṛj)

• snāyu – sinew, tendon
  noun (feminine)
• meda – fat, corpulence
  noun (neuter)
• vasā – marrow, fat, grease
  noun (feminine)
• asṛj – blood
  noun (neuter)

Note: A collective compound of bodily constituents.

रन्ध्रेण (randhreṇa) - through a hole, through an opening

(noun)

Instrumental, neuter, singular of randhra

randhra - hole, opening, aperture, cavity

Note: Indicates the means/path.

पक्षिणा (pakṣiṇā) - like a bird (implied with iva) (by a bird)

(noun)

Instrumental, masculine, singular of pakṣin

pakṣin - bird, winged creature

Note: Used with 'iva' (like) to form a simile.

इव (iva) - like, as, as if

(indeclinable)

Note: Used for comparison.

अन्तर्निलीनम् (antarnilīnam) - (she was) hidden inside (hidden within, concealed inside)

(adjective)

Nominative, neuter, singular of antarnilīna

antarnilīna - hidden within, concealed inside, immersed

Past Passive Participle

Compound of antar (within) and nilīna (hidden, concealed), from ni-lī (to cling, hide).

Compound type : tatpuruṣa (antar+nilīna)

• antar – within, inside, among
  indeclinable
• nilīna – hidden, concealed, clinging to
  adjective (masculine)
  Past Passive Participle
  From root lī (to cling, hide) with prefix ni.
  Prefix: ni
  Root: lī (class 4)

Note: Adverbial usage, or predicate to an implied verb of being.

मलिनात्मनाम् (malinātmanām) - of the persons whose bodies were entered (of those with impure souls, of the wicked)

(noun)

Genitive, masculine, plural of malinātman

malinātman - impure-souled, having a dirty soul, wicked, sinful

Compound of malina (dirty, impure) and ātman (soul, self).

Compound type : bahuvrīhi (malina+ātman)

• malina – dirty, impure, stained, soiled
  adjective (masculine)
• ātman – self, soul, spirit, essential nature
  noun (masculine)

Note: Qualifies the beings whose bodies are being entered.