Narrated Abu Huraira: Allah's Apostle said, "The invocation of anyone of you is granted (by Allah) if he does not show impatience (by saying, "I invoked Allah but my request has not been granted.")
Hadith ReferenceSahih Bukhari / The Book of Invocations / Hadith: 6340
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة