Bhagavatapurana 4.29.73

4.29.73

arthe hy avidyamāne 'pi saṃsṛtir na nivartate /
dhyāyato viṣayān asya svapne 'narthāgamo yathā //

73. Even in the absence of anything real, the mundane bondage does not vanish in the case of one who is thinking of the objects (and the truth is illustrated by the experience of evils in a dream).