عمر بن عبد العزيز
In the following years, the taboo against the writing and following of hadiths had receded to such an extent that the Ummayad leader Umar II ordered the first official collection of Hadith. Abu Bakr ibn Muhammad ibn Hazm and Ibn Shihab al-Zuhri, were among those who wrote Hadiths at Umar II's behest.