I see thee still,And on thy blade and dudgeon gouts of blood,Which was not so before. There’s no such thing.It is the bloody business that informsThus to mine eyes. (2.1.45–49)
Macbeth has a vision of a dagger floating in front of him in the castle just before he kills Duncan. The dagger's handle and tip both point in the direction of Macbeth. Macbeth briefly questions whether the dagger is real. When Macbeth notices that the tip of the dagger has blood on it, he comes to the conclusion that the weapon is not genuine but rather a symbol of his guilt for conspiring to kill Duncan.
Macbeth visits Lady Macbeth after killing Duncan, his hands stained with blood. Macbeth, horrified by his deed, laments that not even Neptune's ocean in its entirety would be sufficient to wash his hands. The blood on Macbeth's hands represents his sense of shame at killing Duncan.
Will all great Neptune’s ocean wash this bloodClean from my hand? (2.2.60–62)
Lady Macbeth turns to Macbeth to demand an explanation for his irrational outbursts after she has asked the guests to leave the feast hall. After being startled by seeing the ghost of Banquo, Macbeth is determined to take whatever steps are necessary to ensure his protection because he now feels that he is not safe, not even from the dead.
Banquo im so sorry iys what had to be done
Everythong is ok guys he has has these randome visions ever sience the deth of Duncan.