The declaration of Faith
The shahadah (الشهادة), or the Islamic creed, is the declaration of belief in the unity of God (Allah in Arabic) and in Muhammad صلى الله عليه و سلم as his prophet. Recitation of the shahadah is considered as one of the Five Pillars of Islam. When sincerely stated aloud, one is considered to have officially declared oneself a Muslim.
Honest recitation of the shahadah three times, in Arabic, in front of two Muslim witnesses, is all that is required for a person to become a Muslim according to most traditional schools.
Sometimes أشهد أن (ašhadu 'an)"I testify that" is prefixed to each half of the Shahada.
One of the earliest
surviving translations of the Shahadah into a foreign language is in
Greek, from the reign of Al-Walid ibn Abd al-Malik (86-96 AH, 705-715