What are the supplications that are recited during ablution?

It is prescribed for the person performing ablution to say "Bismillah (In the name of Allah)" before it, and "Ashhadu an la ilaha illa Allahu wahdahu la sharika lahu, wa ashhadu anna Muhammadan abduhu wa rasuluh. Allahumma ij'alni min al-tawwabina, wa ij'alni min al-mutatahhirin. Subhanaka Allahumma wa bihamdika, ashhadu an la ilaha illa anta, astaghfiruka wa atubu ilayk (I bear witness that there is no god but Allah, alone, without partner, and I bear witness that Muhammad is His servant and His messenger. O Allah, make me among those who repent, and make me among those who purify themselves. Glory be to You, O Allah, and with Your praise, I bear witness that there is no god but You, I seek Your forgiveness and I repent to You)" after it. Nothing has been authentically reported regarding supplications during the ablution itself.