योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-28, verse-86

गन्धर्वपुरनिर्माणविलासेन समं विदुः ।
स्वप्नसंकल्पपुरवदसदेवेदमुत्थितम् ॥ ८६ ॥

gandharvapuranirmāṇavilāsena samaṃ viduḥ ,
svapnasaṃkalpapuravadasadevedamutthitam 86

86. gandharva-pura-nirmāṇa-vilāsena samam viduḥ
svapna-saṅkalpa-pura-vat asat eva idam utthitam

86. viduḥ idam gandharva-pura-nirmāṇa-vilāsena samam
idam svapna-saṅkalpa-pura-vat eva asat utthitam

86. They know this [world] to be identical with the playful creation of a Gandharva city (gandharva-pura). This [world] has arisen as utterly unreal, just like a city born from a dream or imagination (saṅkalpa).

Words meanings summery:

• गन्धर्व-पुर-निर्माण-विलासेन (gandharva-pura-nirmāṇa-vilāsena) - by the playful creation of a Gandharva city (gandharva-pura) (by the playful creation of a city of Gandharvas)

• समम् (samam) - identical with, similar to (equal, similar, alike, with)

• विदुः (viduḥ) - they know (they know, they have known)

• स्वप्न-सङ्कल्प-पुर-वत् (svapna-saṅkalpa-pura-vat) - just like a city born from a dream or imagination (saṅkalpa) (like a city of dream and imagination)

• असत् (asat) - utterly unreal (unreal, non-existent, evil)

• एव (eva) - utterly, indeed (only, just, indeed, truly)

• इदम् (idam) - this [world] (this, this world)

• उत्थितम् (utthitam) - has arisen (arisen, manifested, risen)

Words meanings and morphology

गन्धर्व-पुर-निर्माण-विलासेन (gandharva-pura-nirmāṇa-vilāsena) - by the playful creation of a Gandharva city (gandharva-pura) (by the playful creation of a city of Gandharvas)

(noun)

Instrumental, masculine, singular of gandharva-pura-nirmāṇa-vilāsa

gandharva-pura-nirmāṇa-vilāsa - playful creation of a Gandharva city

Compound type : tatpuruṣa (gandharva-pura+nirmāṇa+vilāsa)

• gandharva – celestial musician, Gandharva
  noun (masculine)
• pura – city, town
  noun (neuter)
• nirmāṇa – creation, construction, formation
  noun (neuter)
  From `nirmā` (to create, form) with suffix `ana`
  Prefix: nir
  Root: mā (class 2)
• vilāsa – play, sport, amusement, playful display
  noun (masculine)
  From `vilas` (to play, sport) with suffix `ghañ`
  Prefix: vi
  Root: las (class 1)

समम् (samam) - identical with, similar to (equal, similar, alike, with)

(adjective)

Accusative, masculine, singular of sama

sama - same, equal, similar, identical

Note: Used here adverbially or as predicate adjective, governing the instrumental case.

विदुः (viduḥ) - they know (they know, they have known)

(verb)

3rd person , plural, active, present (or perfect) (laṭ (or liṭ)) of vid

Root: vid (class 2)

Note: `vid` is an athematic root verb. This form can be present or perfect 3rd plural.

स्वप्न-सङ्कल्प-पुर-वत् (svapna-saṅkalpa-pura-vat) - just like a city born from a dream or imagination (saṅkalpa) (like a city of dream and imagination)

(indeclinable)

Suffix `vat` (like) appended to a compound noun.

Compound type : tatpuruṣa (svapna+saṅkalpa+pura)

• svapna – dream, sleep
  noun (masculine)
  From root `svap` (to sleep) + `na` suffix
  Root: svap (class 2)
• saṅkalpa – intention, resolution, imagination
  noun (masculine)
  From `saṃklp` (to resolve, imagine) + `a` suffix
  Prefix: sam
  Root: klp (class 1)
• pura – city, town
  noun (neuter)

असत् (asat) - utterly unreal (unreal, non-existent, evil)

(adjective)

Nominative, neuter, singular of asat

asat - unreal, non-existent, not good

present active participle

Negative prefix `a-` + present participle of `as` (to be)

Compound type : nañ-tatpuruṣa (a+sat)

• a – not, non-
  indeclinable
• sat – existent, real, good (present participle of `as`)
  present active participle (neuter)
  Present Active Participle
  From root `as` (to be) + `śatṛ` suffix
  Root: as (class 2)

Note: Refers to `idam`.

एव (eva) - utterly, indeed (only, just, indeed, truly)

(indeclinable)

इदम् (idam) - this [world] (this, this world)

(pronoun)

Nominative, neuter, singular of idam

idam - this

उत्थितम् (utthitam) - has arisen (arisen, manifested, risen)

(adjective)

Nominative, neuter, singular of utthita

utthita - risen, arisen, manifested

Past Passive Participle

Derived from root `sthā` with prefix `ut` + suffix `kta`

Prefix: ud

Root: sthā (class 1)

Note: Used predicatively for `idam`.