Dua :before and after Wudhu

[8] What to say before performing ablution

"بِسْمِ اللهِ".

(12) Bismillaahi
In the Name of Allah
Reference: Abu Dawud, Ibn Majah, and Ahmad. See also Al-Albani, 'Irwa'ul-Ghain 1/122

[9] What to say upon completing ablution

"أَشْهَدُ أَنْ لَا إِلَهَ إلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ، وَأَشْهَدُ أَنَّ مُحَمَّداً عَبْدُهُ وَرَسُولُهُ".

13. 'Ash-hadu 'an laa 'ilaaha 'illallaahu wahdahu laa shareeka lahu wa 'ash-hadu 'anna Muhammadan 'abduhu wa Rasooluhu.
I bear witness that none has the right to be worshipped but Allah alone, Who has no partner; and I bear witness that Muhammad is His slave and His Messenger.
Reference: Muslim 1/209.
"اللَّهُمَّ اجْعَلْنِي مِنَ التَّوَّابِينَ وَاجْعَلْنِي مِنَ الْمُتَطَهِّرِينَ".
14. Allaahummaj'alnee minat-tawwaabeena waj'alnee minal-mutatahhireen.
O Allah, make me among those who turn to You in repentance, and make me among those who are purified.
Reference: At-Tirmithi 1/78. See also Al-Albani, Sahih At- Tirmithi 1/18
"سُبْحَانَكَ اللَّهُمَّ وَبِحَمْدِكَ، أَشْهَدُ أَنْ لَا إِلَهَ إِلَّا أَنْتَ، أَسْتَغْفِرُكَ وَأَتُوبُ إِلَيْكَ".
15. Subhaanaka Allaahumma wa bihamdika, 'ash-hadu 'an laa 'ilaaha 'illaa 'Anta, 'astaghfiruka wa 'atoobu 'ilayk.
Glory is to You, O Allah, and praise; I bear witness that there is none worthy of worship but You. I seek Your forgiveness and turn to You in repentance.
Reference: An-Nasa'i, 'Amalul-Yawm wal-Laylah, p. 173. See also Al-Albani, 'Irwa'ul-Ghalil 1/135 and 2/94.