The Shahada (Arabic: ٱلشَّهَادَةُ‎ aš-šahādah , “the testimony”), also spelled Shahadah, is an Islamic creed, one of the Five Pillars of Islam and part of the Azaan, declaring belief in the oneness (tawhid) of God (Allah) and the acceptance of Muhammad as Allah’s messenger.

The Shahada is the first of the Six Kalimas. The Six Kalimas are recorded in various books of knowledge, and are recited and remembered by Muslims across the globe. The Kalimas were compiled for people to memorise and learn the basic fundamentals of Islam.

لَا إِلَٰهَ إِلَّا ٱللَّٰهُ

There is no deity but Allah.

مُحَمَّدٌ رَسُولُ ٱللَّٰهِ

Muhammad PBUH is the messenger of Allah.
The above two statements are commonly prefaced by the phrase ašhadu ʾan (“I bear witness that”), yielding the full form:

أَشْهَدُ أَنْ لَا إِلَٰهَ إِلَّا ٱللَّٰهُ وَأَشْهَدُ أَنَّ مُحَمَّدًا رَسُولُ ٱللَّٰهِ

I bear witness that there is no deity but Allah, and I bear witness that Muhammad PBUH is the messenger of Allah.

There are seven critical conditions of the shahadah, without which it is considered to be meaningless:

1. Al-Ilm: Knowledge of the meaning of the Shahadah, its negation and affirmation.
2. Al-Yaqeen: Certainty – perfect knowledge of it that counteracts suspicion and doubt.
3. Al-Ikhlaas: Sincerity which negates shirk.
4. Al-Sidq: Truthfulness that permits neither falsehood nor hypocrisy.
5. Al-Mahabbah: Love of the Shahadah and its meaning, and being happy with it.
6. Al-Inqiad: Submission to its rightful requirements, which are the duties that must be performed with sincerity to God (alone) seeking His pleasure.
7. Al-Qubool: Acceptance that contradicts rejection.