However, Ibn Taymiyyah — an important 14th century scholar of the Hanbali school — says in "Tafseer" for this verse "there is no obedience in sin"; that people should ignore the order of the ruler if it would disobey the divine law and shouldn't use this as excuse for revolution because it will spell Muslims bloods. According to Ibn Taymiyya, the saying, 'Sixty years with an unjust imam is better than one night without a sultan`, was confirmed by experience. He believed that the Quranic injunction to "enjoin good and forbid evil" ("al-amr bi-l-maʿrūf wa-n-nahy ʿani-l-munkar", found in and and other verses) was the duty of every state functionary with charge over other Muslims from the caliph to "the schoolmaster in charge of assessing children's handwriting exercises."