[Machine] I heard Abu Huraira say, "The most effective supplication is for a person to say: 'O Allah, You are my Lord, and I am Your servant. I have wronged myself, and I acknowledge my sin, so forgive me my sin, for surely You are my Lord. Verily, none forgives sins except You.'"
سَمِعْتُ أَبَا هُرَيْرَةَ يَقُولُ إِنَّ أَوْفَقَ الدُّعَاءِ أَنْ يَقُولَ الرَّجُلُ اللهُمَّ أَنْتَ رَبِّي وَأَنَا عَبْدُكَ ظَلَمْتُ نَفْسِي وَاعْتَرَفْتُ بِذَنْبِي يَا رَبِّ فَاغْفِرْ لِي ذَنْبِي إِنَّكَ أَنْتَ رَبِّي إِنَّهُ لَا يَغْفِرُ الذُّنُوبَ إِلَّا أَنْتَ