“I entered upon the Prophet ﷺ while he was praying and he had placed his left hand on his left thigh, and he had placed his right hand on his right thigh, and clasped his fingers, and extended his index finger, and he was saying: ‘O changer of the hearts, make my heart firm upon Your religion (Yā muqallibal-qulūbi thabbit qalbī ʿalā dīnik).’”  

دَخَلْتُ عَلَى النَّبِيِّ ﷺ وَهُوَ يُصَلِّي وَقَدْ وَضَعَ يَدَهُ الْيُسْرَى عَلَى فَخِذِهِ الْيُسْرَى وَوَضَعَ يَدَهُ الْيُمْنَى عَلَى فَخِذِهِ الْيُمْنَى وَقَبَضَ أَصَابِعَهُ وَبَسَطَ السَّبَّابَةَ وَهُوَ يَقُولُ يَا مُقَلِّبَ الْقُلُوبِ ثَبِّتْ قَلْبِي عَلَى دِينِكَ