The Shahada
Shahada is the testimony of the faith with which Islam begins. In it man recognizes the One God and the Messenger To Allah.
Meaning of the certificate
The meaning of the shahada is conveyed by the words:
I bear witness that there is no god but Allah, and I bear witness, that Muhammad is His slave and Messenger.
The first part is a monotheistic expression: worship is directed only to God. The second is to acknowledge the prophet as God's messenger and to seek to follow his direction. The words of Rab and the prophet also help to show that the prophet is not worshiped as God.
What does the Quran say about this?
In verse 47:19, it is stated that there is no god but Allah.[1] In verse 48:29, Muhammad is called the Messenger of Allah.[2] These verses explain two basic proofs; the above formula is not a literal quote from one verse.
Where to Start
In conventional Islamic teaching, Islam is associated with sincere testimony and understanding of its meaning. It's a conscious expression of faith. It is not necessary to memorize all the terms first: after meeting the Shahada, you can gradually learn the basis of faith, washing and prayer.