Al-Ḥusayn b. Aḥmad b. Idrīs narrated to us, saying that his father narrated to him among others, from Muḥammad b. Ḥasan, from Muḥammad b. ʿAlī, from ʿAlī b. al-Nuʿmān, from ʿAbd Allāh b. Ṭalḥa, from Abī ʿAbd Allāh عليه السلام, who has stated: “The Messenger of Allāh صلى الله عليه وعلى آله has said: “The fasting person is engaged in worship even if he is sleeping on his mattress, so long as he does not backbite a Muslim.”