Abdul Malik bin Umair narrates from Mus'ab bin Sa'd and Amr bin Maymun Awdi. Sayyiduna Sa'd (may Allah be pleased with him) used to teach these words to his children just as a teacher teaches students (in a school). He used to say: The Prophet Muhammad (peace and blessings be upon him) used to seek refuge with these words after prayer: "O Allah! I seek refuge in You from miserliness, and I seek refuge in You from cowardice, and I seek refuge in You from being returned to a feeble old age, and I seek refuge in You from the trials of the world, and I seek refuge in You from the punishment of the grave."