Qur'an...
Qur'an, 48:24” The polytheists were certain that the Prophet (s) would have defeated them if he had fought them. They knew that his companions had insisted on him to fight but he had refused preferring peace, whose end would be good, to war to save the bloods of people and to respect the Kaaba. The people of Quraysh knew well that the Prophet (s) had pitied them and cared for their rights of kinship; therefore he had accepted the truce with its heavy conditions.
He did not have any grudge towards them although they prevented him and his companions from visiting the Kaaba and forced them to go back to Medina where many of his companions were unwilling.
Quraysh thought that this was as retribution to what had happened in the battles of Badr, Uhud and al-Ahzab for that day they realized that the Prophet (s) was not responsible for the shed bloods of the people of Quraysh but it was their chiefs of Quraysh who were responsible for that; like Abu Sufyan, Abu Jahl and their likes who had attacked the Prophet (s) in his place of emigration and so they forced him to defend himself and his companions.
If they had left him and left those, who has received and protected him, alone, he would not have fought them and he would have been satisfied with spreading his mission with wisdom and fair exhortation. In al-Hudaybiya the Prophet (s) had put out the flame of rage inside the hearts of those polytheists, removed their hatred and made them know the reality of their chiefs and masters until they confessed that they had wronged the Prophet (s) and themselves as well.
Hence their hearts became lenient and they felt that their end would be good if they joined him and became under his banner. And it was so after the great victory and the honorable conquest of Mecca; the people of Quraysh, groups by groups, became Muslims. (209) Coming back to Medina The Prophet (s) had stayed in al-Hudaybiya for nineteen days. After that he went back to Medina. When he arrived at Kira’ul Ghameem-between Mecca and Medina-the sura of al-Fat~h was revealed to him.
Umar was still angry why the polytheists had prevented the Muslims from entering Mecca and forced them to go back unlike what they had expected.