It was narrated that Abu Hurairah said: "One of the supplications that the Prophet used to say was: 'Allahumma, inni a' udhu bika min 'ilmin la yanfa' u, wa mindu' a' in la yusma' u, wa min qalbin la yakhsha' u, wa min nafsin la tashba' u [O Allah, I seek refuge with You from knowledge that is of no benefit, from a supplication that is not heard, from a heart that does not fear (You) and from a soul that is not satisfied].'"