 On January 12, Muhammad brought a group of judges and jurists to witness that al-Musta'in had entrusted his affairs to him.Delegates carrying the terms of abdication were sent to Samarra, where al-Mu'tazz personally signed the document and agreed to the conditions.The delegates returned to Baghdad with the signed document on January 24, accompanied by a group of emissaries sent to secure al-Musta'in's allegiance to al-Mu'tazz.