The official compilation of Hadith was facilitated by

Explanation

:"Umar bin Abdul-Azeez was the one who facilitated the compilation of the Hadith. He was a Umayyad caliph who gave an order to the scholars to collect and compile the traditions.Umar ibn Abd al-Aziz ( Arabic : ﻋﻤﺮ ﺑﻦ ﻋﺒﺪ ﺍﻟﻌﺰﻳﺰ , romanized : ʿUmar ibn ʿAbd al-ʿAzīz ; 2 November 682 - c. 5 February 720), commonly known as Umar II ( ﻋﻤﺮ ﺍﻟﺜﺎﻧﻲ ), was the eighth Umayyad caliph , ruling from 22 September 717 until his death in 720. Umar made various significant contributions and reforms to the society, and he has been described as "the most pious and devout" of the Umayyad rulers and was often called the first Mujaddid and the fifth righteous Caliph of Islam.Surrounded with great scholars, he is credited with having ordered the first official collection of
Hadiths and encouraged education to everyone. He also sent out emissaries to China and Tibet , inviting their rulers to accept Islam.