Another tradition says that Abu Bakr collected the Qur'an on...
Another tradition says that Abu Bakr collected the Qur'an on paper and asked Zaid ibne Thabit to review it; when Zaid refused, he sought the help of Omar to persuade Zaid, which he succeeded in doing, and the reviewed copy remained with Abu Bakr, being passed to Omar and then to Hafsa.
A third tradition from Hisam ibne Orwa claims that after the battle of Yamama, when some of the companions of the Holy Prophet who had collected the Qur'an were killed, Abu Bakr ordered Omar and Zaid ibne Thabit to sit at the gate of the Mosque and collect the Qur'an from the people. Another tradition, from Muhammad ibne Seereen, relates that Omar was killed before the Qur'an was collected.
A fifth tradition says that, when Omar asked for one verse of the Holy Qur'an, he was told that it was with some one who was killed in the battle of Yamama. He became very worried and ordered the Qur'an to be collected, and was the first person to collect it in book form. A sixth tradition tells us that Omar decided to collect the Qur'an and ordered that "whosoever has received from the Holy Prophet any portion of the Holy Qur'an should bring it to US".
The people had the Qur'an on pieces of wood, stones, skin, leaves of trees and bones. Omar would not accept anything from any one unless it was certified by two witnesses. But he (Omar) was killed while the collection was still going on. Osman succeeded him and continued the task, also demanding two witnesses before he accepted anything.
Then Khozaimatibne Thabit carne with the last two verses of the Sura-Bar'at, saying, "I have received it from the Holy Prophet and you have not got it in your Qur'an", to which Osman replied, "Yes, I also give evidence that these verses are from God, but tell me where we should place them. Abu Khozaimat said, "Place these two verses at the end of the last revealed portion of the Qur'an." Accordingly, they were placed at the end of the Sura-Bar'at.
The seventh tradition asserts that it was Omar who accepted these last verses of the Sura-Bar'at from a man of the Ansars without any witnesses, with his own confirmation of it. The eighth tradition says that, after the battle of Yamama in which four hundred or seven hundred reciters of the Qur'an were killed, Zaid ibne Thabit approached Omar and said, 91 The Qur'an is the only unifying factor of our religion; if it is lost, our religion is also lost.
I have decided to collect it in book form.", to which Omar replied, "Wait until I ask Abu Bakr".