योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-24, verse-9

ततो मधुरगामिन्यौ विश्राम्यन्त्यौ स्वशक्तितः ।
शून्ये ददृशतुर्व्योम महारम्भातिमन्थरम् ॥ ९ ॥

tato madhuragāminyau viśrāmyantyau svaśaktitaḥ ,
śūnye dadṛśaturvyoma mahārambhātimantharam 9

9. tataḥ madhuragāminyau viśrāmyantyau svaśaktitaḥ
śūnye dadṛśatuḥ vyoma mahārambhātimantharam

9. tataḥ madhuragāminyau svaśaktitaḥ viśrāmyantyau
śūnye mahārambhātimantharam vyoma dadṛśatuḥ

9. Then, the two, gracefully proceeding and resting according to their capacity (śakti), saw in the emptiness a vast expanse of space, exceedingly slow in its grand formation.

Words meanings summery:

• ततः (tataḥ) - then, thereafter, from there

• मधुरगामिन्यौ (madhuragāminyau) - the two gentle-walking, the two gracefully moving

• विश्राम्यन्त्यौ (viśrāmyantyau) - the two resting; while resting

• स्वशक्तितः (svaśaktitaḥ) - as much as their strength (śakti) allowed, according to their capacity (according to one's own power; by one's strength)

• शून्ये (śūnye) - in the empty space, in the void, in emptiness

• ददृशतुः (dadṛśatuḥ) - they saw

• व्योम (vyoma) - an expanse of space, the subtle, nascent universe (sky, space, ether, atmosphere)

• महारम्भातिमन्थरम् (mahārambhātimantharam) - describing the space/universe as being extremely sluggish despite its vast potential or beginning, indicating a state of subtle, slow unfolding (extremely sluggish in its great beginning; very slow in its grand formation)

Words meanings and morphology

ततः (tataḥ) - then, thereafter, from there

(indeclinable)

मधुरगामिन्यौ (madhuragāminyau) - the two gentle-walking, the two gracefully moving

(adjective)

Nominative, feminine, dual of madhuragāminī

madhuragāminī - gentle-walking (feminine)

Compound type : tatpuruṣa (madhura+gāminī)

• madhura – sweet, pleasant, gentle, charming
  adjective (masculine)
• gāminī – one who walks/moves (feminine)
  adjective (feminine)
  agent noun/adjective
  from root gam (to go) with -in suffix
  Root: gam (class 1)

Note: Qualifies the implied subject (Lila and Saraswati)

विश्राम्यन्त्यौ (viśrāmyantyau) - the two resting; while resting

(adjective)

Nominative, feminine, dual of viśrāmyantī

viśrāmyantī - resting (feminine)

Present Active Participle

Present Active Participle of root śram with prefix vi-

Prefix: vi

Root: śram (class 4)

Note: Qualifies the implied subject (Lila and Saraswati)

स्वशक्तितः (svaśaktitaḥ) - as much as their strength (śakti) allowed, according to their capacity (according to one's own power; by one's strength)

(noun)

Ablative, feminine, singular of svaśakti

svaśakti - one's own power, one's own strength (śakti)

Ablative case formed with the suffix -tas

Compound type : tatpuruṣa (sva+śakti)

• sva – own, self
  pronoun (masculine)
• śakti – power, strength, energy, capability
  noun (feminine)

Note: -taḥ suffix indicates ablative sense 'from/by reason of'

शून्ये (śūnye) - in the empty space, in the void, in emptiness

(noun)

Locative, neuter, singular of śūnya

śūnya - empty, void, deserted; emptiness, void (as a noun)

Root: śūñ (class 1)

ददृशतुः (dadṛśatuḥ) - they saw

(verb)

3rd person , dual, active, perfect (lit) of dṛś

perfect tense

reduplicated perfect

Root: dṛś (class 1)

व्योम (vyoma) - an expanse of space, the subtle, nascent universe (sky, space, ether, atmosphere)

(noun)

Accusative, neuter, singular of vyoman

vyoman - sky, heaven, atmosphere, space, ether

महारम्भातिमन्थरम् (mahārambhātimantharam) - describing the space/universe as being extremely sluggish despite its vast potential or beginning, indicating a state of subtle, slow unfolding (extremely sluggish in its great beginning; very slow in its grand formation)

(adjective)

Accusative, neuter, singular of mahārambhātimanthara

mahārambhātimanthara - extremely sluggish in great undertakings/beginnings

Compound type : tatpuruṣa (mahārambha+atimantha)

• mahārambha – great undertaking, grand beginning
  noun (masculine)
• atimantha – very slow, extremely sluggish
  adjective (masculine)
  Prefix: ati

Note: Agrees with 'vyoma'