योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-140, verse-22

क्वचित्सन्नमहाकायगरुडामरपर्वतः ।
क्वचिन्मत्तमहासेतुर्यमदण्डेन भूजुषा ॥ २२ ॥

kvacitsannamahākāyagaruḍāmaraparvataḥ ,
kvacinmattamahāseturyamadaṇḍena bhūjuṣā 22

22. kvacit sannamahākāyagaruḍāmaraparvataḥ
kvacit matta-mahā-setuḥ yama-daṇḍena bhūjuṣā

22. kvacit sannamahākāyagaruḍāmaraparvataḥ
kvacit matta-mahā-setuḥ bhūjuṣā yama-daṇḍena

22. Somewhere, gigantic-bodied Garuḍas, gods, and mountains lie collapsed. Elsewhere, a great embankment, now frenzied, exists due to Yama's staff pervading the earth.

Words meanings summery:

• क्वचित् (kvacit) - sometimes, somewhere, in some place, on some occasion

• सन्नमहाकायगरुडामरपर्वतः (sannamahākāyagaruḍāmaraparvataḥ) - one characterized by collapsed, gigantic-bodied Garuḍas, gods, and mountains

• क्वचित् (kvacit) - sometimes, somewhere, in some place, on some occasion

• मत्त-महा-सेतुः (matta-mahā-setuḥ) - a frenzied great dam/bridge

• यम-दण्डेन (yama-daṇḍena) - by Yama's staff

• भूजुषा (bhūjuṣā) - by that which occupies/pervades the earth (by the earth-dweller/earth-enjoyer)

Words meanings and morphology

क्वचित् (kvacit) - sometimes, somewhere, in some place, on some occasion

(indeclinable)

सन्नमहाकायगरुडामरपर्वतः (sannamahākāyagaruḍāmaraparvataḥ) - one characterized by collapsed, gigantic-bodied Garuḍas, gods, and mountains

(compound noun)

Compound type : bahuvrīhi (sanna+mahākāya+garuḍa+amara+parvata)

• sanna – collapsed, sunken, destroyed, dejected
  adjective (masculine)
  Past Passive Participle
  From √sad (to sink, collapse)
  Root: sad (class 1)
• mahākāya – gigantic-bodied, colossal
  adjective (masculine)
• garuḍa – Garuḍa (mythical bird, vehicle of Viṣṇu)
  proper noun (masculine)
• amara – immortal, deity, god
  noun (masculine)
• parvata – mountain
  noun (masculine)

Note: This compound describes a state of the scene.

क्वचित् (kvacit) - sometimes, somewhere, in some place, on some occasion

(indeclinable)

मत्त-महा-सेतुः (matta-mahā-setuḥ) - a frenzied great dam/bridge

(compound noun)

Compound type : karmadhāraya (matta+mahā+setu)

• matta – intoxicated, frenzied, wild
  adjective (masculine)
  Past Passive Participle
  From √mad (to be intoxicated)
  Root: mad (class 4)
• mahā – great, mighty
  adjective (masculine)
• setu – dam, bridge, embankment, boundary
  noun (masculine)

यम-दण्डेन (yama-daṇḍena) - by Yama's staff

(compound noun)

Compound type : ṣaṣṭhī-tatpuruṣa (yama+daṇḍa)

• yama – Yama, god of death
  proper noun (masculine)
• daṇḍa – staff, rod, punishment
  noun (masculine)

भूजुषा (bhūjuṣā) - by that which occupies/pervades the earth (by the earth-dweller/earth-enjoyer)

(adjective)

Instrumental, masculine, singular of bhūjuṣ

bhūjuṣ - earth-dwelling, earth-enjoying, earth-serving

Present Active Participle

From bhū (earth) + √juṣ (to please, enjoy, serve, dwell) as a compound participle.

Compound type : upapada-tatpuruṣa (bhū+juṣ)

• bhū – earth, land
  noun (feminine)
• juṣ – enjoying, serving, dwelling
  verb
  root to enjoy/serve
  Root: juṣ (class 1)

Note: This participle modifies yama-daṇḍena.