(رَبِّ) أَنِّيْ مَسَّنِيَ الضُّرُّ وَأَنْتَ أَرْحَمُ الرَّاحِمِيْنَ.
Indeed, adversity has touched me, and you are the Most Merciful of the merciful.
(Rabbi) Anni massaniyaḍḍurru wa Anta Arhamurrahimin.
This supplication shows the manners with which Prophet Ayyub dealt with Allah. Despite being tested with enormous hardship in the form of disease, the loss of all his wealth, and the loss of all his children, Prophet Ayyub remained patient and accepted everything that was decreed for him. Rather than overtly ask Allah to heal him, Ayyub simply described his hardship in a way that understated its severity, and then described Allah as being the Most Merciful of those who are merciful. Indeed, Allah seeks no compensation for His mercy from His creation. A merciful person, on the other hand, will always seek some form of recompense, whether it is compensation in this life or the Hereafter, or non-material compensation such as a compliment or an honorable reputation. -Ibn ‘Ashoor.