Muhammad ibn Yahya from Ali ibn al-Hasan ibn Faddal from al-Husayn ibn Sayf from Uthman from Salih ibn Abi al-Aswad, who said: Abu Abdillah عليه السلام, peace be upon him, mentioned the ‘Mosque of al-Sahlah’ and said: “Indeed, it is the residence of our companion (the Qa'im (ajf)), when He (ajf) rises with his family.”