Sayyiduna Jabir (may Allah be pleased with them both) narrates that the Messenger of Allah (peace and blessings be upon him) ordered us to fast the day of Ashura.
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Abu al-Zubayr except Ibn Lahi'ah, and Mu'adh is alone in narrating it."