Vasiṣṭha's teaching (Mahārāmāyaṇa) 6.28.86

6.28.86

gandharvapuranirmāṇavilāsena samaṃ viduḥ .
svapnasaṃkalpapuravadasadevedamutthitam .. 86

86. [Sanskrit available] The bustle of these fleeting bodies in the world, resembles the commotion of an aerial castle, and the appearance of a city in an evanescent dream and fancy.

87. [Sanskrit available]
I see the world as a city in my protracted dream, with all its movables and immovable things, lying as quiet and still as in profound sleep.