Burglary also means that you will be hit by some difficulties. Dreaming of a knife, such a cold weapon, represents a kind of injury. Dreaming of robbery is not a bloody battle, but it also reminds you that you'd better beware of people around you. Their words may hurt you unintentionally. This refers to psychological injury, which is often unintentional and intentional, so don't take it too seriously even if you hear something bad. Maybe the speaker didn't expect to break your heart.