योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-77, verse-42

उल्मुकान्योन्यनिष्पेषवह्निचूर्णसुवर्णजैः ।
रजोभिर्विवृतैर्हेमकुट्टिमाकाशकोटरम् ॥ ४२ ॥

ulmukānyonyaniṣpeṣavahnicūrṇasuvarṇajaiḥ ,
rajobhirvivṛtairhemakuṭṭimākāśakoṭaram 42

42. ulmukānyonyaniṣpeṣavahnicūrṇasuvarnajaiḥ
rajobhiḥ vivṛtaiḥ hemakuṭṭimākāśakoṭaram

42. ulmukānyonyaniṣpeṣavahnicūrṇasuvarnajaiḥ
vivṛtaiḥ rajobhiḥ hemakuṭṭimākāśakoṭaram

42. The cavity of space, like a golden pavement, becomes visible through spread golden fire-dust, generated from the mutual grinding of firebrands.

Words meanings summery:

• उल्मुकान्योन्यनिष्पेषवह्निचूर्णसुवर्नजैः (ulmukānyonyaniṣpeṣavahnicūrṇasuvarnajaiḥ) - by those generated from golden fire-dust caused by the mutual grinding of firebrands

• रजोभिः (rajobhiḥ) - by dusts, by particles

• विवृतैः (vivṛtaiḥ) - by the revealed, by the spread, by the exposed

• हेमकुट्टिमाकाशकोटरम् (hemakuṭṭimākāśakoṭaram) - the space-cavity like a golden pavement

Words meanings and morphology

उल्मुकान्योन्यनिष्पेषवह्निचूर्णसुवर्नजैः (ulmukānyonyaniṣpeṣavahnicūrṇasuvarnajaiḥ) - by those generated from golden fire-dust caused by the mutual grinding of firebrands

(adjective)

Instrumental, masculine, plural of ulmukānyonyaniṣpeṣavahnicūrṇasuvarnaja

ulmukānyonyaniṣpeṣavahnicūrṇasuvarnaja - generated from golden fire-dust from mutual grinding of firebrands

Compound adjective, `ja` (born from/generated) at the end. The structure is `(ulmuka-anyonyaniṣpeṣa-vahnicūrṇa) + suvarṇa-ja`.

Compound type : Tatpurusha (ulmukānyonyaniṣpeṣavahnicūrṇa+suvarṇaja)

• ulmukānyonyaniṣpeṣavahnicūrṇa – fire-dust from the mutual grinding of firebrands
  noun (neuter)
  Compound. `ulmuka` (firebrand) + `anyonyaniṣpeṣa` (mutual grinding) + `vahnicūrṇa` (fire-dust).
• suvarṇaja – gold-born, golden, made of gold
  adjective (masculine)
  From `suvarṇa` (gold) + `ja` (born from).
  Root: jan (class 4)

Note: Agrees with `rajobhiḥ`.

रजोभिः (rajobhiḥ) - by dusts, by particles

(noun)

Instrumental, neuter, plural of rajas

rajas - dust, dirt, pollen, atom, particle

`s`-stem noun.

Root: rañj (class 1)

Note: Agent of revelation/filling.

विवृतैः (vivṛtaiḥ) - by the revealed, by the spread, by the exposed

(adjective)

Instrumental, masculine, plural of vivṛta

vivṛta - revealed, disclosed, exposed, opened, spread

Past Passive Participle

From `vi-vṛ` (to open, uncover).

Prefix: vi

Root: vṛ (class 1)

Note: Describes the dusts as 'spread out' or 'made manifest'.

हेमकुट्टिमाकाशकोटरम् (hemakuṭṭimākāśakoṭaram) - the space-cavity like a golden pavement

(noun)

Accusative, neuter, singular of hemakuṭṭimākāśakoṭara

hemakuṭṭimākāśakoṭara - space-cavity like a golden pavement

Compound. `hemakuṭṭima` (golden pavement) + `ākāśakoṭara` (space cavity). It's a karmadhāraya or upamāna compound: 'space-cavity which is like a golden pavement' or 'golden-paved space cavity'.

Compound type : Karmadhāraya (hemakuṭṭima+ākāśakoṭara)

• hemakuṭṭima – golden pavement/floor
  noun (neuter)
  Compound. `hema` (gold) + `kuṭṭima` (pavement).
• ākāśakoṭara – cavity of space, hollow of the sky
  noun (neuter)
  Compound. `ākāśa` (space, sky) + `koṭara` (cavity, hollow).

Note: Object of implied verb (e.g., pūryamāṇam).