´It was narrated from Abu Hurairah that :` The Messenger of Allah [SAW] said: "We will fight the people until they say La ilaha illallah. If they say La ilaha illallah then their blood and their wealth become forbidden to us, except for a right that is due, and their reckoning will be with Allah."
Hadith Referenceسنن نسائي / كتاب تحريم الدم / 3983
Hadith Gradingالألبانی:حسن صحيح | زبیر علی زئی:صحيح