Wahb ibn Munabbih
Traditionally, seven kings of the jinn are assigned to each day of the week. Although they can do, unlike the spirits of heavens, both good and evil, they have responsibility given by God regarding the affairs of the earth. In some reports, they are rather infernal demons ("ʻIfrīt") than explicitly jinn. A hadith from Wahb ibn Munabbih reports that the archetypes of the jinn are like air, differing from the regular jinn, they don't need to eat, drink and they do not produce offspring. Since they do not move themselves, they send subordinate devils ("shayāṭīn"). They are mentioned in several Muslim treatises, such as the Book of Wonders. The Muslim Occultist Ahmad al-Buni sets four of these kings named "Mudhib", "Maimun", "Barqan" and "al-Ahmar", in opposition to the four archangels of Islam. They frequently appear inscribed in talismans. According to Muslim astrology, one needs to get permission of the king of the jinn for the corresponding day to perform a spell. When the jinn-king is summoned together with the name of the angel responsible for the day, it would be impossible for the jinn-king to deny an order of the sorcerer.