योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-24, verse-50

शुक्रवाहनभेकौघैः क्वचिद्गलकृतारवम् ।
शून्यतावारिवलितं क्षेत्रमाकाशवासिनाम् ॥ ५० ॥

śukravāhanabhekaughaiḥ kvacidgalakṛtāravam ,
śūnyatāvārivalitaṃ kṣetramākāśavāsinām 50

50. śukravāhanabhekaughaiḥ kvacit galakṛtāravam
śūnyatāvārivalitam kṣetram ākāśavāsinām

50. kvacit galakṛtāravam śukravāhanabhekaughaiḥ
kṣetram ākāśavāsinām śūnyatāvārivalitam

50. Sometimes, it resonates with the croaking sounds made by multitudes of frogs, which are the vehicles for Shukra. This is the field (kṣetra) of the sky-dwellers (ākāśavāsin), enveloped by the waters of emptiness (śūnyatā).

Words meanings summery:

• शुक्रवाहनभेकौघैः (śukravāhanabhekaughaiḥ) - by multitudes of frogs, which are the vehicles for Shukra (by hosts of frogs, which are vehicles for Shukra)

• क्वचित् (kvacit) - sometimes (sometimes, at times)

• गलकृतारवम् (galakṛtāravam) - resonates with the croaking sounds made (having a sound made in the throat, croaking)

• शून्यतावारिवलितम् (śūnyatāvārivalitam) - enveloped by the waters of emptiness (śūnyatā) (enveloped by the waters of emptiness/void)

• क्षेत्रम् (kṣetram) - the field (kṣetra) (field, realm, region, sacred space)

• आकाशवासिनाम् (ākāśavāsinām) - of the sky-dwellers (ākāśavāsin) (of the sky-dwellers, of those residing in space)

Words meanings and morphology

शुक्रवाहनभेकौघैः (śukravāhanabhekaughaiḥ) - by multitudes of frogs, which are the vehicles for Shukra (by hosts of frogs, which are vehicles for Shukra)

(noun)

Instrumental, masculine, plural of śukravāhanabhekaugha

śukravāhanabhekaugha - host of frogs having Shukra as vehicle

Compound type : bahuvrīhi (śukra+vāhana+bheka+ogha)

• śukra – Shukra (preceptor of demons/planet Venus); bright, white, pure
  proper noun (masculine)
• vāhana – vehicle, mount, bearer
  noun (neuter)
  Derived from root vah (to carry).
  Root: vah (class 1)
• bheka – frog
  noun (masculine)
• ogha – multitude, host, flood, stream
  noun (masculine)

क्वचित् (kvacit) - sometimes (sometimes, at times)

(indeclinable)

गलकृतारवम् (galakṛtāravam) - resonates with the croaking sounds made (having a sound made in the throat, croaking)

(adjective)

Nominative, neuter, singular of galakṛtārava

galakṛtārava - sound made by the throat, croaking

Compound type : tatpuruṣa (gala+kṛta+ārava)

• gala – throat, voice
  noun (masculine)
• kṛta – made, done, performed
  adjective
  Past Passive Participle
  Derived from root kṛ (to do, to make).
  Root: kṛ (class 8)
• ārava – sound, noise, cry, roar
  noun (masculine)
  Prefix: ā
  Root: ru (class 2)

Note: Adjective modifying an implied noun like 'kṣetram' (field).

शून्यतावारिवलितम् (śūnyatāvārivalitam) - enveloped by the waters of emptiness (śūnyatā) (enveloped by the waters of emptiness/void)

(adjective)

Nominative, neuter, singular of śūnyatāvārivalita

śūnyatāvārivalita - enveloped by the waters of emptiness

Compound type : tatpuruṣa (śūnyatā+vāri+valita)

• śūnyatā – emptiness, void, nothingness
  noun (feminine)
• vāri – water
  noun (neuter)
• valita – enveloped, surrounded, covered
  adjective
  Past Passive Participle
  Derived from root val (to move, to surround).
  Root: val (class 1)

Note: Adjective modifying 'kṣetram'.

क्षेत्रम् (kṣetram) - the field (kṣetra) (field, realm, region, sacred space)

(noun)

Nominative, neuter, singular of kṣetra

kṣetra - field, ground, place, realm, sacred space

आकाशवासिनाम् (ākāśavāsinām) - of the sky-dwellers (ākāśavāsin) (of the sky-dwellers, of those residing in space)

(noun)

Genitive, masculine, plural of ākāśavāsin

ākāśavāsin - sky-dweller, inhabitant of the ether

Compound of ākāśa (sky/space) and vāsin (dweller, from root vas).

Compound type : tatpuruṣa (ākāśa+vāsin)

• ākāśa – sky, space, ether
  noun (masculine)
• vāsin – dwelling, residing, inhabitant
  noun
  Agent noun from root vas (to dwell).
  Root: vas (class 1)