What examples of the motifs of blood and sleep are in Act 2 of Macbeth?

In Act 2 of Macbeth, the motifs of
blood and sleep are seen after Macbeth murders King Duncan.  Specifically in Scene 2,
Macbeth runs back into his chamber to meet Lady Macbeth, and he is sure that someone has
heard him commit the murder.  He says that he thought he heard someone say "'Macbeth
does murther Sleep,'" and then Macbeth describes "the innocent Sleep" (II.ii.35).  The
motif of sleep relates to Macbeth's inner conflict and sense of guilt at comitting such
a crime to appease his own desires.  Further, the image of blood is present shortly
after when Lady Macbeth realizes that Macbeth is still holding the bloody dagger with
which he killed Duncan.  The motif of blood also relates to inner conflict and
guilt.