And Qutaybah ibn Sa'id narrated to us, from Layth; and Ibn Rumh narrated to us, informing us al-Layth, from Nafi', from Ibn 'Umar, may Allah be pleased with them both, that the Day of 'Ashura' was mentioned in the presence of the Messenger of Allah, peace and blessings be upon him. The Messenger of Allah, peace and blessings be upon him, said: "It was a day that the people of the Jahiliyyah used to fast. So whoever among you wishes to fast it, let him fast it, and whoever dislikes it, let him leave it."