It is narrated from Sayyiduna Ibn Amr (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) instructed Sayyiduna Ali (may Allah be pleased with him) and Sayyidah Fatimah (may Allah be pleased with her) that when they lie down on their bed, they should say Subhan Allah, Alhamdulillah, and Allahu Akbar one hundred times (the narrator forgot which of these should be said thirty-four times). Sayyiduna Ali (may Allah be pleased with him) says that since that time, I have never abandoned this practice. Ibn Kawwa asked, "Not even on the night of the Battle of Siffin?" He replied, "Yes! Not even on the night of the Battle of Siffin did I abandon it."