Aniconism in Islam is the avoidance of images (aniconism) of sentient beings in some forms of Islamic art. Islamic aniconism stems in part from the prohibition of idolatry and in part from the belief that the creation of living forms is God's prerogative. The Quran does not explicitly prohibit visual representation of any living being. The corpus of hadith (sayings attributed to the Islamic prophet Muhammad) contains more explicit prohibitions of images of living beings, challenging painters to "breathe life" into their images and threatening them with punishment on the Day of Judgment. Muslims have interpreted these prohibitions in different ways in different times and places. Religious Islamic art has been typically characterized by the absence of figures and extensive use of calligraphic, geometric and abstract floral patterns. However, representations of Muhammad (in some cases, with his face concealed) and other religious figures are found in some manuscripts from lands to the east of Anatolia, such as Persia and India. These pictures were meant to illustrate the story and not to infringe on the Islamic prohibition of idolatry, but many Muslims regard such images as forbidden. In secular art of the Muslim world, representations of human and animal forms historically flourished in nearly all Islamic cultures, although, partly because of opposing religious sentiments, figures in paintings were often stylized, giving rise to a variety of decorative figural designs. There were episodes of iconoclastic destruction of figurative art, such as the temporary decree by the Umayyad caliph Yazid II in 721 CE ordering the destruction of all representational images in his realm. A number of historians have seen an Islamic influence on the Byzantine iconoclastic movement of the 8th century, though others regard this is as a legend that arose in later times in the Byzantine empire. Theological views The Quran, the Islamic holy book, does not explicitly prohibit the depiction of human figures; it merely condemns idolatry. Interdictions of figurative representation are present in the hadith, among a dozen of the hadith recorded during the latter part of the period when they were being written down. Because these hadith are tied to particular events in the life of the Islamic prophet Muhammad, they need to be interpreted in order to be applied in any general manner. Sunni exegetes of , from the 9th century onward, increasingly saw in them categorical prohibitions against producing and using any representation of living beings.