योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-82, verse-12

दृढभाववशादन्तरस्थीन्याप्नोति सा ततः ।
मातृगर्भनिषण्णेषु सुसूक्ष्मेवाङ्कुरस्थितिः ॥ १२ ॥

dṛḍhabhāvavaśādantarasthīnyāpnoti sā tataḥ ,
mātṛgarbhaniṣaṇṇeṣu susūkṣmevāṅkurasthitiḥ 12

12. dṛḍhabhāva-vaśāt antarastīni āpnoti sā tataḥ
mātṛgarbhaniṣaṇṇeṣu susūkṣmā iva aṅkura-sthitiḥ

12. sā dṛḍhabhāva-vaśāt tataḥ antarastīni āpnoti
mātṛgarbhaniṣaṇṇeṣu susūkṣmā iva aṅkura-sthitiḥ

12. That consciousness (saṃvitti), by the force of a firm mental impression, then grasps the internal essence of things. This process is like the extremely subtle embryonic state (aṅkura-sthiti) in beings residing within a mother's womb.

Words meanings summery:

• दृढभाव-वशात् (dṛḍhabhāva-vaśāt) - by the force of a firm mental impression (by the force of firm resolve, owing to strong intention, due to a strong mental impression)

• अन्तरस्तीनि (antarastīni) - internal essence of things (internal things, inner entities, objects within)

• आप्नोति (āpnoti) - grasps (attains, reaches, obtains, grasps)

• सा (sā) - that (consciousness) (she, that (feminine demonstrative pronoun))

• ततः (tataḥ) - then (then, thence, thereupon, therefore)

• मातृगर्भनिषण्णेषु (mātṛgarbhaniṣaṇṇeṣu) - in beings residing within a mother's womb (in those situated in a mother's womb, in fetuses in a mother's womb)

• सुसूक्ष्मा (susūkṣmā) - extremely subtle (very subtle, extremely fine)

• इव (iva) - like (like, as, as if)

• अङ्कुर-स्थितिः (aṅkura-sthitiḥ) - embryonic state (state of a sprout, embryonic state, condition of germinating)

Words meanings and morphology

दृढभाव-वशात् (dṛḍhabhāva-vaśāt) - by the force of a firm mental impression (by the force of firm resolve, owing to strong intention, due to a strong mental impression)

(noun)

Ablative, masculine, singular of dṛḍhabhāva-vaśa

dṛḍhabhāva-vaśa - control/force of a firm state/intention

Compound noun.

Compound type : ṣaṣṭhī-tatpuruṣa (dṛḍhabhāva+vaśa)

• dṛḍhabhāva – firm state, strong feeling, firm intention
  noun (masculine)
  Compound of `dṛḍha` (firm) and `bhāva` (state, feeling).
• vaśa – will, power, control, force
  noun (masculine)
  Root: vaś (class 2)

अन्तरस्तीनि (antarastīni) - internal essence of things (internal things, inner entities, objects within)

(noun)

Accusative, neuter, plural of antarastin

antarastin - inner-lying, internal (as an adjective, or substance)

Compound of `antar` (within) and a nominalized form of `sthā` (to stand). `sthīn` indicates an entity or being.

Compound type : upapada-tatpuruṣa (antar+sthin)

• antar – within, inside, internal
  indeclinable
• sthin – that which stands, being, entity
  noun (neuter)
  Derived from root `sthā`.
  Root: sthā (class 1)

Note: It is the object of `āpnoti`.

आप्नोति (āpnoti) - grasps (attains, reaches, obtains, grasps)

(verb)

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

Present indicative active.

Root `āp` with augment `no`.

Prefix: ā

Root: āp (class 5)

सा (sā) - that (consciousness) (she, that (feminine demonstrative pronoun))

(pronoun)

Nominative, feminine, singular of tad

tad - that, she, it

Demonstrative pronoun.

ततः (tataḥ) - then (then, thence, thereupon, therefore)

(indeclinable)

Adverb.

मातृगर्भनिषण्णेषु (mātṛgarbhaniṣaṇṇeṣu) - in beings residing within a mother's womb (in those situated in a mother's womb, in fetuses in a mother's womb)

(adjective)

Locative, masculine, plural of mātṛgarbhaniṣaṇṇa

mātṛgarbhaniṣaṇṇa - situated in a mother's womb

Compound adjective.

Compound type : saptamī-tatpuruṣa (mātṛgarbha+niṣaṇṇa)

• mātṛgarbha – mother's womb
  noun (masculine)
  Compound of `mātṛ` (mother) and `garbha` (womb).
• niṣaṇṇa – seated, situated, placed
  adjective (masculine)
  Past Passive Participle
  Derived from root `sad` (to sit) with prefix `ni`.
  Prefix: ni
  Root: sad (class 1)

Note: Used as a substantive, referring to the beings in the womb.

सुसूक्ष्मा (susūkṣmā) - extremely subtle (very subtle, extremely fine)

(adjective)

Nominative, feminine, singular of susūkṣma

susūkṣma - very subtle, extremely fine

Compound of intensive prefix `su` and `sūkṣma` (subtle).

Compound type : karmadhāraya (su+sūkṣma)

• su – good, well, very (intensive prefix)
  indeclinable
• sūkṣma – subtle, fine, minute
  adjective (masculine)

Note: Qualifies `aṅkura-sthitiḥ`.

इव (iva) - like (like, as, as if)

(indeclinable)

Particle expressing comparison.

अङ्कुर-स्थितिः (aṅkura-sthitiḥ) - embryonic state (state of a sprout, embryonic state, condition of germinating)

(noun)

Nominative, feminine, singular of aṅkura-sthiti

aṅkura-sthiti - state of a sprout, embryonic state

Compound noun.

Compound type : ṣaṣṭhī-tatpuruṣa (aṅkura+sthiti)

• aṅkura – sprout, shoot, embryo
  noun (masculine)
• sthiti – standing, state, condition, position
  noun (feminine)
  Derived from root `sthā`.
  Root: sthā (class 1)

Note: Subject of the comparison clause.