Fatima died six months after her father's death, may God bless him and grant him peace. So Abu Bakr, may God be pleased with them, sent to Ali, who came to his house and pledged allegiance. He said, "We do not begrudge you what God has brought you of bounty and goodness, but we believe that we have a share in this matter, and you have taken it for yourself without us. We do not deny your merit."

During the days of Abu Bakr, Musaylimah the Liar was killed. Abu Bakr had sent an army to fight him, and Khalid ibn al-Walid arrived among them. They fought fiercely, and in the end, the Muslims were victorious, and they defeated the polytheists and killed Musaylimah the Liar. He was killed with the same spear with which Hamza, the uncle of the Prophet, may God bless him and grant him peace, was killed. A man from the Ansar shared in his killing. Musaylimah was stationed in Yamamah. Musaylimah had come to the Prophet (peace be upon him) with a delegation from Bani Hanifa, and he embraced Islam, then he became arrogant and claimed prophethood independently.

Then, in the battle against Musaylimah, a group of reciters from the Muhajirun and Ansar were killed. Abu Bakr saw the large number of reciters who were killed, and he ordered that the Quran be collected from scattered parchments. He was concerned that it might be lost. He said to Zayd ibn Thabit, "You are a wise young man, and we do not suspect you of anything. You used to write down the revelation for the Messenger of God, may God bless him and grant him peace. So search for the Quran and collect it."

When Abu Bakr died, Umar took over. He saw the people's disagreement regarding the Quran, so he said to Zayd, "You have been entrusted with the Quran. So copy it and send it to the provinces."

During the days of Abu Bakr, the conquest of Al-Sham began with the jizya. Then the year thirteen AH arrived, and in it was the great Battle of Yarmouk, which was the cause of the conquests of Al-Sham. It was the year thirteen AH, and Heraclius was in Homs at that time. When he heard of the defeat of the Romans at Yarmouk, he left Homs and made it a buffer between him and the Muslims. When Khalid ibn al-Walid and Abu Ubaidah finished the battle of Busra, they turned to the Levant. Then the Romans requested a truce, and they agreed to pay one dinar per head and a measure of wheat.

The death of Abu Bakr (may God be pleased with him).

There is disagreement about the cause of his death. It was said that the Jews poisoned him in his food, or in his drink. He and Al-Harith ibn Kaladah ate it, and Al-Harith said, "It was poisoned food. I will die after a year." And from Aisha, may God be pleased with her, he took a bath on a cold day and did not go out to prayer for fifteen days. He ordered Umar to lead the people in prayer and entrusted the caliphate to him. Then Abu Bakr died during the life of the Prophet, may God bless him and grant him peace, between the Maghrib and Isha prayers on the night of Tuesday, twenty-two days remaining in Jumada al-Akhirah in the year 13 AH. He was sixty-three years old, according to the most correct opinion, having lived as long as the Prophet, may God bless him and grant him peace, according to the most prevalent narrations.