The distinction between principles and rulings would seem to be significant. But I bet that "rulings" refers to the Arabic "ahkam," which is more generally translated as "provisions." The distinction is still significant, but for accuracy's sake, you should double check this, particularly as "rulings" would imply a dependence on case law, which somehow does not sound right in the context.
Suspected assailant in car-ramming attack in West Bank shot (Haaretz)
from the article: In Egypt, a delicate balance between political Salafists and jihadi ones