If when the action of these organs is stopped, the action of the mind, does not cease, but on the other hand the mind continues to act, that state of Consciousness is called Dream.
इन्द्रियाणां व्युपरमे मनोऽव्युपरतं यदि। सेवते विषयानेव तं विद्यात् स्वप्नदर्शनम्॥