اللَّهُمَّ اجْعَلْنِي مِنَ التَّوَّابِينَ وَاجْعَلْنِي مِنَ الْمُتَطَهِّرِينَ
Allahummaj'alni minat-tawwabina waj'alni minal-mutatahhirin
O Allah, make me among those who repent and make me among those who purify themselves.
Said after wudu, but also appropriate after prayer. Two categories of people: the tawwabin (those who constantly return to Allah in repentance) and the mutatahhirin (those who constantly purify themselves — both physically and spiritually). These are ongoing states, not one-time achievements. You do not repent once; you become a person who repents. The du'a asks for identity transformation, not just forgiveness.
Related Du'as
سُبْحَانَ اللَّهِ (33) وَالْحَمْدُ لِلَّهِ (33) وَاللَّهُ أَكْبَرُ (33) لَا إِلَٰهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ
Glory be to Allah (33x), Praise be to Allah (33x), Allah is the Greatest (33x), then: There is no deity except Allah, alone without partner. His is the dominion and His is the praise, and He is over all things capable.
Sahihاللَّهُمَّ اهْدِنِي فِيمَنْ هَدَيْتَ وَعَافِنِي فِيمَنْ عَافَيْتَ وَتَوَلَّنِي فِيمَنْ تَوَلَّيْتَ وَبَارِكْ لِي فِيمَا أَعْطَيْتَ وَقِنِي شَرَّ مَا قَضَيْتَ فَإِنَّكَ تَقْضِي وَلَا يُقْضَىٰ عَلَيْكَ وَإِنَّهُ لَا يَذِلُّ مَنْ وَالَيْتَ وَلَا يَعِزُّ مَنْ عَادَيْتَ تَبَارَكْتَ رَبَّنَا وَتَعَالَيْتَ
O Allah, guide me among those whom You have guided, grant me well-being among those whom You have granted well-being, take me into Your care among those whom You have taken into Your care, bless me in what You have given me, and protect me from the evil of what You have decreed. For You decree and none can decree over You. None whom You have befriended shall be humiliated, and none whom You have opposed shall be honored. Blessed are You, our Lord, and Exalted.
Sahihاللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنَ الْجُبْنِ وَأَعُوذُ بِكَ مِنَ الْبُخْلِ وَأَعُوذُ بِكَ مِنْ أَنْ أُرَدَّ إِلَى أَرْذَلِ الْعُمُرِ وَأَعُوذُ بِكَ مِنْ فِتْنَةِ الدُّنْيَا وَعَذَابِ الْقَبْرِ
O Allah, I seek refuge in You from cowardice, from miserliness, from being returned to the most decrepit old age, and I seek refuge in You from the trials of this world and the punishment of the grave.
Sahihقُلْ هُوَ اللَّهُ أَحَدٌ اللَّهُ الصَّمَدُ لَمْ يَلِدْ وَلَمْ يُولَدْ وَلَمْ يَكُن لَّهُ كُفُوًا أَحَدٌ قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ قُلْ أَعُوذُ بِرَبِّ النَّاسِ
Say: He is Allah, the One. Allah, the Eternal Refuge. He neither begets nor is born. Nor is there any equivalent to Him. Say: I seek refuge in the Lord of daybreak. Say: I seek refuge in the Lord of mankind. (Recite each surah in full — once after every prayer, three times after Fajr and Maghrib.)
Hasan