Upon completing the ablution › Wudu & Purification
Dua after ablution — glorification and seeking forgiveness
سُبْحـانَكَ اللّهُـمَّ وَبِحَمدِك أَشْهَـدُ أَنْ لا إِلهَ إِلاّ أَنْتَ أَسْتَغْفِرُكَ وَأَتوبُ إِلَـيْك .
Subhanakal-lahumma wabihamdika ashhadu an la ilaha illa anta astaghfiruka wa-atoobu ilayk.
Translation
How perfect You are O Allah, and I praise You, I bear witness that none has the right to be worshipped except You, I seek Your forgiveness and turn in repentance to You.