"The Messenger of Allah ﷺ would often say: Ya Muqallibal-qulub, thabbit qalbi 'ala dinik('O Changer of the Hearts! Strengthen my heart upon Your Religion.)' So I said: 'O Prophet of Allah! We believe in you and what you have come with, but do you fear for us?' He said: 'Yes. Indeed the hearts are between two Fingers of Allah's Fingers, He changes them as He wills.'"  

كَانَ رَسُولُ اللَّهِ ﷺ يُكْثِرُ أَنْ يَقُولَ يَا مُقَلِّبَ الْقُلُوبِ ثَبِّتْ قَلْبِي عَلَى دِينِكَ فَقُلْتُ يَا رَسُولَ اللَّهِ آمَنَّا بِكَ وَبِمَا جِئْتَ بِهِ فَهَلْ تَخَافُ عَلَيْنَا قَالَ نَعَمْ إِنَّ الْقُلُوبَ بَيْنَ أَصْبُعَيْنِ مِنْ أَصَابِعِ اللَّهِ يُقَلِّبُهَا كَيْفَ يَشَاءُ