Mus'ab bin Sa'd said that :
Sa'd used to teach him these words, narrating from the Prophet [SAW]: "Allahumma inni a'udhu bika minal-bukhli, wa a'udhu bika minal-jubni, wa a'udhu bika an uradda ila ardhalil-'umuri, wa a'udhu bika min fitnatid-dunya wa 'adhabil-qabr (O Allah, I seek refuge with You from miserliness, and I seek refuge with You from cowardice, and I seek refuge with You from reaching the age of senility, and I seek refuge in You from the trials of this world and the torment of the grave.)"