Answer:Abu Bakr Siddiq
Explanation:According to Islamic tradition, the Qur'an was first compiled into a book format by Zayd ibn Thabit and other scribes under the first caliph — Abu Bakr Siddiq. As the Islamic Empire began to grow, and differing recitations were heard in far-flung areas, the Quran was recompiled for uniformity in recitation (r. 644–56).