Vasiṣṭha's teaching (Mahārāmāyaṇa) 3.60.23

3.60.23

yathā ca mṛtvā jāto'haṃ taruṇo yauvanasthitaḥ .
yāto'smi yojanaśataṃ svapna ityanubhūyate .. 23

22. [Sanskrit available] The night appears a longsome age, to the long suffering sick, while it seems as a moment, in the nightly revels of the merry; so a moment appears as an age in the dream, and an age passes off as a moment in the state of insensibility. (The length and shortness of duration, depending on our consciousness and insensibility of the succession of our ideas. See Locke and Kant on our idea of time).

23. [Sanskrit available] The notions of the resurrection of the dead, and of one's metempsychosis, and being re-born in a new body; of his being a boy, youth or old man; and of his migrations to different places at the distance of hundreds of leagues, are all but the phenomena of sleep, and retrospective views in a dream.