The Testimony of Faith:
The
Five Pillars of Islam are the framework of the Muslim life. They are the
testimony of faith,
prayer,
giving zakat (support of the needy),
fasting during the month of Ramadan, and the
pilgrimage to Makkah once in a lifetime for those who are able.
The testimony of faith is saying with conviction,
“La ilaha illa Allah, Muhammadur rasoolu Allah.” This saying means
“There is no true god (deity) but God (Allah), and Muhammad is the Messenger (Prophet) of God.”
The first part, “There is no true god but Allah,” means that none has the right to be worshipped but God alone, and that God has neither partner nor son. This testimony of faith is called the
Shahada, a simple formula which should be said with conviction in order to convert to Islam (as explained on
this page).
The testimony of faith is the most important pillar of Islam.
"He is Allah , other than whom there is no deity, Knower of the unseen and the witnessed. He is the Entirely Merciful, the Especially Merciful.
He is Allah , other than whom there is no deity, the Sovereign, the Pure, the Perfection, the Bestower of Faith, the Overseer, the Exalted in Might, the Compeller, the Superior. Exalted is Allah above whatever they associate with Him.
He is Allah , the Creator, the Inventor, the Fashioner; to Him belong the best names. Whatever is in the heavens and earth is exalting Him. And He is the Exalted in Might, the Wise". (Al-hashr)