Hanukkah mentioned in Grace After Meals and Amidah. All steady oils permitted in Shabbos lamp, olive oil preferred. Understanding “burnt oil” – disqualified Terumah of the Priest that may not be used in. Shabbos lamp because it may come to be used in a Festival lamp, and consecrated items may not be burned on a Festival even though cooking/kindling are permitted. Circumcision overrides Shabbos and Festivals so long as it is performed on the 8th day, and not deferred for medical or circumstantial reason.