And Abu Bakr ibn Abi Shaybah and Ibn Numayr narrated to us, both saying: Abu Usamah narrated to us, from Abu Umays, from Qays ibn Muslim, from Tariq ibn Shihab, from Abu Musa — may Allah be pleased with him — who said: The day of Ashura was a day that the Jews honored and took as a festival. The Messenger of Allah, peace and blessings be upon him, said: "Fast it, you."