No, Imam Ali is not considered a disbeliever in Islam. He is highly revered by Muslims as the cousin and son-in-law of the Prophet Muhammad, and is considered one of the most important figures in Islamic history. Imam Ali is seen as a pious and righteous individual who played a crucial role in the early development of the Islamic faith. Muslims hold him in high esteem and consider him one of the four rightly guided caliphs. **

Yes, Imam Ali is extremely important for Shiites. He is considered the first Imam and the rightful successor to Prophet Muhammad. Shiites believe that Imam Ali was chosen by God to lead the Muslim community after the Prophet's death, and they hold him in high regard for his piety, wisdom, and devotion to Islam. His teachings and actions are a central part of Shiite beliefs and practices, and he is seen as a symbol of justice, courage, and righteousness for Shiites around the world. **

There are no specific verses in the Quran that mention Imam Ali by name. However, Shia Muslims believe that there are verses in the Quran that indirectly refer to Imam Ali. For example, they interpret the verse 5:55, "Your guardian can only be Allah; and His messenger and those who believe, who establish worship and pay the poor-due, and bow down (in prayer)," as a reference to Imam Ali's close relationship with the Prophet Muhammad and his role as his successor. Additionally, they believe that the verse 3:61, "If anyone disputes in this matter with thee, now after (full) knowledge hath come to thee, say: 'Come! Let us gather together, our sons and your sons, our women and your women, ourselves and yourselves: Then let us earnestly pray, and invoke the curse of Allah on those who lie!'" refers to the event of Mubahila, where the Prophet Muhammad took Imam Ali, Fatimah, Hasan, **

Shiites believe that Imam Ali was infallible because they consider him to be the rightful successor to Prophet Muhammad, chosen by divine appointment. They believe that Imam Ali was divinely guided and protected from committing any sins or errors, and that he possessed spiritual and moral perfection. This belief is rooted in the concept of "ismah," or infallibility, which is a fundamental tenet of Shiite Islam and is believed to be inherent in the Imams, including Imam Ali. This belief in the infallibility of Imam Ali is central to the Shiite understanding of his leadership and authority within Islam. **

Yes, Shiites are allowed to hang a picture of Imam Ali in their homes or places of worship as a way to show their respect and love for him. Imam Ali holds a special place in Shiite Islam as the cousin and son-in-law of the Prophet Muhammad, and is considered the first Imam by Shiites. Hanging a picture of Imam Ali is a common practice among Shiites to honor his teachings and legacy. **

In Sunni Islam, there is no specific prohibition against wearing a necklace with the sword of Imam Ali. However, it is important to consider the cultural and historical significance of such symbols and how they may be perceived by others. It is advisable for Sunnis to be respectful and mindful of the sensitivities of different sects within Islam when it comes to displaying symbols associated with specific figures. Ultimately, personal beliefs and intentions should guide one's choices in matters of religious symbols and attire. **

Imam Ali holds a revered position among Sunnis as the fourth caliph and a close companion of the Prophet Muhammad. He is respected for his knowledge, piety, and bravery. Sunnis accept many Hadiths attributed to Imam Ali, including his famous saying: "Do for people what you want them to do for you." Additionally, Sunnis also accept Hadiths where Imam Ali narrates the sayings and actions of the Prophet Muhammad. **

Imam Ali holds a respected position among Sunnis as the fourth caliph of Islam and a close companion of the Prophet Muhammad. Sunnis view him as a righteous and pious figure who played a significant role in the early history of Islam. Some hadiths attributed to Imam Ali that are also accepted by Sunnis include his famous saying, "Do for people what you want them to do for you," and his emphasis on the importance of knowledge and seeking wisdom. **