What does hamlet warn them not to worry about when they see him next?

In Shakespeare's "Hamlet," the titular character warns his friends not to worry about his behavior when they see him next, particularly after he feigns madness. He reassures them that although he may act strangely, it is all part of his plan to uncover the truth behind his father's murder. Hamlet emphasizes that his unusual demeanor should not be a cause for concern, as it is a deliberate act to achieve his goals.