Explanation

During the 23 years of Muhammad's time as a prophet, the verses of the Quran were memorized as they were revealed, and about 42 scribes wrote the verses on different materials such as paper, cloth, bone fragments and leather.

The Quran collected between two binders by Abu Bakr was transferred to Umar after he died.

After Umar died, it was transferred to his daughter Hazrat Hifsa