The Philosophy of the Upanishads c11.s3.t3.3

c11.s3.t3.3

Throwing off in sleep what pertains to the body,
Sleepless he contemplates the sleeping organs;
Borrowing their light he returns then back to his place,
The golden spirit, the sole bird of passage.

This lower nest he would have guarded by the life,
And himself rises aloft immortal from the nest;
Immortal he moves whither he will,
The golden spirit, the sole bird of passage.

In the dream-state he moves up and down,
And fashions for himself as god many forms,
At one time gaily sporting as it were with woman,
At another again glowering as it were with terrible mien.

Only his playground is seen here,
He himself is not seen anywhere.