योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-91, verse-12

यथा गन्धर्वसंकल्पात्पुरमेवं हि चेतसः ।
सवातायनमाकारभासुरं जायते वपुः ॥ १२ ॥

yathā gandharvasaṃkalpātpuramevaṃ hi cetasaḥ ,
savātāyanamākārabhāsuraṃ jāyate vapuḥ 12

12. yathā gandharvasaṃkalpāt puram evam hi
cetasaḥ savātāyanam ākārabhāsuram jāyate vapuḥ

12. yathā gandharvasaṃkalpāt puram evam hi
cetasaḥ savātāyanam ākārabhāsuram vapuḥ jāyate

12. Just as an illusory city arises from the mere imagination of a Gandharva, similarly, from the mind, a body manifests, complete with windows and resplendent in its form.

Words meanings summery:

• यथा (yathā) - just as, as

• गन्धर्वसंकल्पात् (gandharvasaṁkalpāt) - from the imagination of a Gandharva

• पुरम् (puram) - an illusory city (like Gandharvanagara) (a city, a town)

• एवम् (evam) - thus, in this manner, so

• हि (hi) - indeed, surely

• चेतसः (cetasaḥ) - from the mind, of the mind

• सवातायनम् (savātāyanam) - with windows

• आकारभासुरम् (ākārabhāsuram) - shining with form, resplendent in its appearance

• जायते (jāyate) - is born, arises, becomes

• वपुः (vapuḥ) - a body, form, figure

Words meanings and morphology

यथा (yathā) - just as, as

(indeclinable)

गन्धर्वसंकल्पात् (gandharvasaṁkalpāt) - from the imagination of a Gandharva

(noun)

Ablative, masculine, singular of gandharvasaṃkalpa

gandharvasaṁkalpa - Gandharva's imagination or resolve

Compound type : Tatpuruṣa (gandharva+saṃkalpa)

• gandharva – celestial musician; a class of semi-divine beings, often associated with illusion
  noun (masculine)
• saṃkalpa – intention, resolve, imagination, mental conception
  noun (masculine)
  Prefix: sam
  Root: kḷp (class 1)

पुरम् (puram) - an illusory city (like Gandharvanagara) (a city, a town)

(noun)

Nominative, neuter, singular of pura

pura - city, town, fortress

एवम् (evam) - thus, in this manner, so

(indeclinable)

हि (hi) - indeed, surely

(indeclinable)

चेतसः (cetasaḥ) - from the mind, of the mind

(noun)

Ablative, neuter, singular of cetas

cetas - mind, intellect, consciousness

सवातायनम् (savātāyanam) - with windows

(adjective)

Nominative, neuter, singular of savātāyana

savātāyana - having windows

Compound type : Bahuvrīhi (sa+vātāyana)

• sa – with, accompanied by
  indeclinable
• vātāyana – window, air hole
  noun (neuter)

आकारभासुरम् (ākārabhāsuram) - shining with form, resplendent in its appearance

(adjective)

Nominative, neuter, singular of ākārabhāsura

ākārabhāsura - shining with form, of glorious form

Compound type : Tatpuruṣa (ākāra+bhāsura)

• ākāra – form, shape, appearance, aspect
  noun (masculine)
• bhāsura – shining, brilliant, radiant, splendid
  adjective (masculine)
  Root: bhās (class 1)

जायते (jāyate) - is born, arises, becomes

(verb)

3rd person , singular, middle, present indicative (laṭ) of jan

Root: jan (class 4)

वपुः (vapuḥ) - a body, form, figure

(noun)

Nominative, neuter, singular of vapus

vapus - body, form, figure