Is it true that Umar ibn Abd al-Aziz stopped the cursing of Imam Ali (may Allah be pleased with him) in the mosques after assuming the caliphate, replacing it with the recitation of Allah's saying: ﴿إِنَّ اللَّهَ يَأْمُرُ بِالْعَدْلِ وَالْإِحْسَانِ﴾ (Indeed, Allah enjoins justice and good conduct)?

The Umayyads used to curse Ali ibn Abi Talib until Umar ibn Abd al-Aziz assumed the caliphate. He forbade the cursing of Ali and wrote to his governors about it. The reason for this was that his teacher, Ubaydullah ibn Abdullah ibn Utbah ibn Mas'ud, asked him: "When did you learn that Allah was angry with the people of Badr and Bay'at al-Ridwan after He had been pleased with them?" When Umar replied that he had not heard of such a thing, his teacher said to him: "Then what is it that I have heard about you concerning Ali?" Umar apologized and abandoned his previous stance. Moreover, his father used to falter when mentioning Ali in his sermons. When Umar asked him about this, his father replied that if people knew Ali's virtues, they would desert him for his sons. When Umar assumed the caliphate, instead of cursing Ali, he recited the verse: "Indeed, Allah enjoins justice, and the doing of good, and giving to kinsfolk." People approved of his action, and among what was said about him was the poetry of Katheer Azza: "You ruled and did not curse Ali, nor did you fear a free man, nor did you follow the saying of a criminal."