Dua 018 -

https://sunnah.com/abudawud/8/106
Asma' bint al-Hakam said: I heard Ali say: I was a man; when I heard a tradition from the Messenger of Allah (ﷺ), Allah benefited me with it as much as He willed. But when some one of his companions narrated a tradition to me I adjured him. When he took an oath, I testified him.

AbuBakr narrated to me a tradition, and AbuBakr narrated truthfully. He said: I heard the apostle of Allah (ﷺ) saying: When a servant (of Allah) commits a sin, and he performs ablution well, and then stands and prays two rak'ahs, and asks pardon of Allah, Allah pardons him. He then recited this verse: "And those who, when they commit indecency or wrong their souls, remember Allah" (Al-Qur'an 3:135).
قَالَ سَمِعْتُ عَلِيًّا، - رَضِيَ اللَّهُ عَنْهُ - يَقُولُ كُنْتُ رَجُلاً إِذَا سَمِعْتُ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم حَدِيثًا نَفَعَنِي اللَّهُ مِنْهُ بِمَا شَاءَ أَنْ يَنْفَعَنِي وَإِذَا حَدَّثَنِي أَحَدٌ مِنْ أَصْحَابِهِ اسْتَحْلَفْتُهُ فَإِذَا حَلَفَ لِي صَدَّقْتُهُ قَالَ وَحَدَّثَنِي أَبُو بَكْرٍ وَصَدَقَ أَبُو بَكْرٍ - رضى الله عنه - أَنَّهُ قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏"‏ مَا مِنْ عَبْدٍ يُذْنِبُ ذَنْبًا فَيُحْسِنُ الطُّهُورَ ثُمَّ يَقُومُ فَيُصَلِّي رَكْعَتَيْنِ ثُمَّ يَسْتَغْفِرُ اللَّهَ إِلاَّ غَفَرَ اللَّهُ لَهُ ‏"‏ ‏.‏ ثُمَّ قَرَأَ هَذِهِ الآيَةَ ‏{‏ وَالَّذِينَ إِذَا فَعَلُوا فَاحِشَةً أَوْ ظَلَمُوا أَنْفُسَهُمْ ذَكَرُوا اللَّهَ ‏}‏ إِلَى آخِرِ الآيَةِ ‏