أشهد أن لا إله إلاَّ الله و أشهد أن محمد رسول الله
"ašhadu an lā ilāha illā-llāh, wa ašhadu anna muammadan abduhu wa rasūlu-llāh".
"I bear witness that there is no deity (none truly to be worshipped) but, Allah, and I bear witness that Mohammad is his slave and messenger"
Shahadah (testimony of faith) in Arabic 
Shahadah (testimony of faith) in English 
Shahadah (testimony of faith) word by word translation 