What is the dua to be recited after performing wudu?

The dua to be recited after performing wudu is: "Ashhadu alla ilaha illallah, wahdahu la sharika lah, wa ashhadu anna Muhammadan abduhu wa rasuluh." This means "I bear witness that there is no god but Allah, alone without any partner, and I bear witness that Muhammad is His servant and Messenger."