In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Sabre
To hold a sabre in your dream means that you will undertake a task and complete it successfully, but if you simply see a sabre then some news will make you happy.