رَبِّ اغْفِرْ وَارْحَمْ وَأَنْتَ خَيْرُ الرَّاحِمِينَ.
My Lord, forgive and have mercy, and You are the best of the merciful.
Rabbighfir warham wa Anta khayrurrahimin.
In this supplication, Allah commands the Prophet Muhammad, Sallallahu ‘alaihi wasallam, to ask for forgiveness and mercy, but the supplication does not specify an exact recipient for that forgiveness or mercy. Hence, scholars have stated that it might be a supplication for Allah to forgive and have mercy upon all Believers. -Ibn ‘Ashoor.