A dua to say in prayer

The dua the Prophet ﷺ taught Abu Bakr to say in his prayer.

Narrated by Abu Bakr as-Siddiq

Abu Bakr asked the Prophet ﷺ: "Teach me a supplication to say in my prayer." He said: "Say: O Allah, I have wronged myself greatly, and none forgives sins but You, so forgive me with forgiveness from You and have mercy on me; You are the Forgiving, the Merciful."

Sahih al-Bukhari 834, Sahih Muslim 2705

What this hadith teaches

If the best man after the prophets needed to say "I have wronged myself", then all of us do.

Reference and grade

Grade
Sahih: agreed upon by al-Bukhari and Muslim
Narrator
Abu Bakr as-Siddiq

The hadith in Arabic نص الحديث

قُلِ اللَّهُمَّ إِنِّي ظَلَمْتُ نَفْسِي ظُلْمًا كَثِيرًا وَلاَ يَغْفِرُ الذُّنُوبَ إِلاَّ أَنْتَ، فَاغْفِرْ لِي مَغْفِرَةً مِنْ عِنْدِكَ، وَارْحَمْنِي إِنَّكَ أَنْتَ الْغَفُورُ الرَّحِيمُ

Arabic text of Sahih al-Bukhari 834, as given on sunnah.com.