And Ahmad ibn ʿUthman al-Nawfali narrated to us, Abu ʿAsim narrated to us, ʿUmar ibn Muhammad ibn Zayd al-ʿAsqalani narrated to us, Salim ibn ʿAbd Allah narrated to me, ʿAbd Allah ibn ʿUmar — may Allah be pleased with them both — said: The Day of ʿAshuraʾ was mentioned in the presence of the Messenger of Allah, peace and blessings be upon him, and he said: "That is a day which the people of the Jahiliyyah used to fast. So whoever wishes may fast it, and whoever wishes may leave it."