The Collection of the Qur'an After the Era of the Prophet: Is It an Innovation?

Question:
Honorable Shaykh, may Allah grant you success. A questioner from outside this country says: Some of the Sufis among us, when we warn them against religious innovations (bid'ah), say that the Qur'an was collected after the era of the Messenger of Allah (peace and blessings be upon him), and that he did not do it. Is this considered an innovation?

Answer:
No, this is from the Sunnah. Who collected the Qur'an? The Messenger (peace and blessings be upon him) did not die until the Qur'an was collected and written, but it was scattered. Then 'Umar ibn al-Khattab (may Allah be pleased with him) collected it from the people, gathering it in one place. Then... those who came to him came; Hudhayfah ibn al-Yaman said, "The people are about to differ like the Jews and the Christians. Each one has a mushaf, and it is possible for one of us to hear a mushaf that differs from another's." So he stood up and ordered Zayd ibn Thabit to write the Uthmanic mushaf. Zayd ibn Thabit, along with some of the senior Companions, wrote the mushaf and prepared it. He took a copy and sent it to Egypt, a copy to Sham, and a copy to the other regions. This is the Uthmanic mushaf on which the Companions (may Allah be pleased with them) agreed. Yes.