Ali ibn Abi Taleb had great status with the Prophet ﷺ for the following reasons: (1) His father, Abu Taleb, used to support and defend the Prophet against Qureish disbelievers, (2) He is the husband of Fatema, the Prophet's daughter, his most beloved daughters, and (3) The father of Prophet's grandsons, Al-Hasan and Al-Husein. In this hadith, Ali swore in Allah Who split up the seed, placed it in the soil, and created the plant by His power. He swore in Allah Who created the men and souls. His saying, "It is the Prophet's promise ..." means a covenant. His saying, "illiterate ..." is the attribute with which the Prophet was described in the previous books and in two places in the Quran: (1) "Those who follow the Messenger, the unlettered prophet, whom they find written in what they have of the Torah and the Gospel." {Al-A'raaf: 157) and (2) "So believe in Allah and His Messenger, the unlettered prophet, who believes in Allah and His words." {Al-A'raaf: 158) It was the Prophet's promise to Ali that he had a virtue that all believers would love him, but hypocrites would hate him. It means that if one loves and knows Ali's prestige, his closeness to the Prophet, the Prophet's love for him, and his support of Islam, it is proof of his authentic faith and truthfulness as he is doing what Allah and his Prophet please. On the contrary, if one hates him, it is proof of his hypocrisy and evil intention. It is an additional recommendation for Ali, for the Prophet ﷺ recommended us to care about his companions and follow their methods. Also, he guided us to give a high prestige to his rightly guided caliphs, including Ali. It is neither proof of Ali's specific guardianship, nor his caliphate after the Prophet's death. It may have been the Prophet's appreciation for Alai and call for Muslims to give him his considerable prestige and avoid belittling him after the Prophet's death. On the other hand, it was a sign of prophethood, for the Prophet knew that some people would go to extremes when dealing with Ali after the Prophet's death whether they would love him exaggeratedly or belittle him. As a result, he confirmed the believers' hearts would love Ali and the hypocrites' hearts would hate him..