The Messenger of Allah ﷺ used to say: "O Allah, I seek refuge in Thee from four things: Knowledge which does not profit, a heart which is not submissive, a soul which has an insatiable appetite, and a supplication which is not heard." (Using translation from Abū Dāʾūd 1548)  

أَنَّهُ سَمِعَ أَبَا هُرَيْرَةَ يَقُولُ كَانَ رَسُولُ اللهِ ﷺ يَقُولُ اللهُمَّ إِنِّي أَعُوذُ بِكَ مِنَ الْأَرْبَعِ مِنْ عِلْمٍ لَا يَنْفَعُ وَمِنْ قَلْبٍ لَا يَخْشَعُ وَمِنْ نَفْسٍ لَا تَشْبَعُ وَمِنْ دُعَاءٍ لَا يُسْمَعُ  

"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].'" (Using translation from Ibn Mājah 250)  

قَالَ رَسُولُ اللهِ ﷺ «اللهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ عِلْمٍ لَا يَنْفَعُ وَمِنْ قَلْبٍ لَا يَخْشَعُ وَمِنْ نَفْسٍ لَا تَشْبَعُ وَمِنْ دُعَاءٍ لَا يُسْمَعُ»