Dua 40

When you finish ablution (Wudu)

أَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ، وَأَشْهَدُ أَنَّ مُحَمَّدًا عَبْدُهُ وَرَسُولُهُ،

Ash- hadu an laa ilaha il lal laahu Waḥdahu laa shareeka lahu, wa ash- hadu anna muḥammadan ‛abduhu wa rasooluh.

I bear witness that none has the right to be worshipped except Allah, alone, without partner, and I bear witness that Muhammad is His slave and Messenger.

Tirmidhi 55