Muhammad (Arabic: محمد; c. 570 – 8 June 632), is considered by Muslims and Baháʼís to be a prophet and messenger of God. Muhammad is almost universally considered by Muslims as the last prophet sent by God to mankind. He is viewed as the first and best of the Fourteen Infallibles by Shias. Muslims consider him to have restored the unaltered original monotheistic faith of Adam, Abraham, Moses, Jesus, and other prophets. The revelations, which Muhammad received until his death, form the verses of the Quran, regarded by Muslims as the "Word of God" and around which the religion is based. Besides the Quran, Muhammad's teachings and practices (sunnah), found in the Hadith and sira literature, are also upheld by Muslims and used as sources of Islamic law. Appraisals in modern history of Muhammad have been favorable, while some of the appraisals of Muhammad throughout history, such as those found in medieval China, have also been positive.