Muhammad ibn Ali ibn Mahbub from Muhammad ibn al-Husayn from Muhammad ibn Sinan from ‘Ammar ibn Marwan from al-Munakhkhal ibn Jamil from Jabir: Abu Ja‘far عليه السلام, peace be upon him, said: “When you turn away from an obligatory prayer, do not turn away except with the act of turning away accompanied by the cursing of the Banu Umayyah.”