The Prophet ﷺ ordered the fast of Ashura on the tenth day.
أن النبي ﷺ أمر بصيام عاشوراء يوم العاشر.
Bazzar reported it in Kashf Astar (1051), from Muhammad bin Ali, who said, Abu Asim narrated to us, saying, Ibn Abu Dhib narrated to us, from Zuhri, from Urwa, from Ayesha, and he related it.Bazzar said, "We do not know of anyone who reported this wording except Ibn Abu Dhib."Haythami said in Majma (3/189), "Its narrators are the narrators of the Sahih."