Hazrat Umm-e-Salamahra was asked what the most oft-repeated prayer of the Holy Prophetsa was. She replied and said the following prayer:
يَا مُقَلِّبَ القُلُوبِ ثَبِّتْ قَلْبِی عَلَی دِينِكَ
(O Transformer of Hearts, make my heart steadfast on faith.)
Hazrat Umm-e-Salamahra had enquired from the Holy Prophetsa as to why he would repeat this prayer so often. He replied, “God is in total control of a person’s heart, as if the heart is held between His two fingers and He can turn it whenever He wants.”
(Jami‘ al-Tirmidhi, Kitab al-Da‘wat)