ذِكْرُ مَا يَدْعُو الْمَرْءُ فِي عُقَيْبِ التَّشَهُّدِ قَبْلَ السَّلَامِ
When the Prophet ﷺ uttered salutation at the end of the prayer, he used to say: "O Allah, forgive me my former and latter sins, what I have kept secret and what I have done openly, and what I have done extravagance; and what You know better than I do. You are the Advancer, the Delayer, there is no god but You." (Using translation from Abū Dāʾūd 1509)
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَقُولُ آخِرُ مَا يَقُولُ بَيْنَ التَّشَهُّدِ وَالتَّسْلِيمِ «اللَّهُمَّ اغْفِرْ لِي مَا قَدَّمْتُ وَمَا أَخَّرْتُ وَمَا أَسْرَرْتُ وَمَا أَعْلَنْتُ وَمَا أَسْرَفْتُ وَمَا أَنْتَ أَعْلَمُ بِهِ مِنِّي أَنْتَ الْمُقَدَّمُ وَأَنْتَ الْمُؤَخَّرُ لَا إِلَهَ إِلَّا أَنْتَ»