Zāyd bin Thābit bin al-Ḍaḥḥāk (Arabic: زيد بن ثابت, romanized: Zayd ibn Thābit) was the personal scribe of the Islamic prophet Muhammad, serving as the chief recorder of the Quranic text.
After Muhammad's passing in 632, he was ordered to collect the Quran into a single volume from various written and oral sources.
Zayd had the role of writing down the Quranic verses that were sent to Muhammad from Allah through the Angel Jibra'il.
[2] So during Abu Bakr's reign as caliph, Zayd was given the task of collecting the Quranic verses from all over Arabia and was the head of the committee[4] (including Ubayy ibn Ka'b) which performed this task (the number of people in this committee in some sources are around 25 whereas in some they number to 75).
Zayd finally accepted the task and, according to him, "started locating the Quranic material and collecting it from parchments, scapula, leafstalks of date palms and from the memories of men (who knew it by heart)".
The suhuf had received ijma (approval) by almost all of the companions of Muhammad including Umar and Ali.
Zayd ibn Thabit thus became one of the foremost authorities on the Quran, he was appointed the judge of Medina.
A group of companions, headed by Hudhayfah ibn al-Yaman, who was then stationed in Iraq, came to Uthman and urged him to "save the Muslim ummah before they differ about the Quran".
Uthman obtained the manuscript of the Quran from Hafsah and again summoned the leading authority, Zayd ibn Thabit, and some other companions to make copies of it.