स्वप्ने चावस्तुकः कायः पृथगन्यस्य दर्शनात् ।
यथा कायस्तथा सर्वं चित्तदृश्यमवस्तुकम् ॥ ३६ ॥svapne cāvastukaḥ kāyaḥ pṛthaganyasya darśanāt |
yathā kāyastathā sarvaṃ cittadṛśyamavastukam || 36 ||36. The body active in dream is unreal as the other body, quite distinct from it, is perceived. Like the body, everything, cognised by the mind, is unreal.
Shankara Bhashya (commentary)
The body, which appears to be wandering in the dream, is unreal; for, another body, quite different from it, is seen in the spot where the dreamer lies. As the body perceived in the dream is unreal, so also all that is cognised by the mind, even in the waking state, is unreal; for, all these perceived objects are mere different states of the mind. The significance of this chapter is that even the waking experiences, on account of their being similar to the dream experiences, are unreal.
Anandagiri Tika (glossary)
The body which is active in the waking state lies motionless in the bed when the dreamer perceives that he is wandering at various places. Therefore from the standpoint of the waking state, this dream body is unreal. Similarly, from the standpoint of the Ultimate Reality the body perceived in the waking state—the body which is felt to be honoured or insulted by the friends or enemies—is also unreal. It is because this body is also an idea in the mind of the perceiver. As dream objects are unreal on account of their being perceived by the mind, so also the objects of the waking experience are unreal for the very same reason. Being perceived by the mind is the common factor in both waking and dream states. Therefore the experiences of both the states bear with them the stamp of unreality.