The common people had an insatiable appetite for stories about
Muhammad, and hadith narrators were only too willing to oblige. One
man, ‘Abd al-Karim Abu ‘l-Auja, confessed to fabricating 4,000
hadith. He was executed in ca. 155 [AH] / 772 [CE] by crucifixion.
(“Collection of the Hadith”. Great Events in Religion: An Encyclopedia of Pivotal Events in
Religious History. Florin Curta and Andrew Holt, eds.)