Kalimah is the centrepiece of faith in Islam and its affirmation is the first of the five pillars, the distinction that defines a Muslim. Every Muslim must understand and believe in the meaning of first Kalimah (Tayyibah).
The statement "There is none worthy of worship besides Allah, and Muhammad [sallallaahu alayhi wasallam] is the messenger of Allah" is known as Kalimah Tayyibah. Its extended version is Kalimah Shahadah, which is "I bear witness that there is none worthy of worship besides Allah. He is alone. He has no partner, and I bear witness that Muhammad [sallallaahu alayhi wasallam] is His servant and messenger.". These two Kalimah is numbered as First Kalimah and Second Kalimah respectively. Believing and declaring of Kalimah' is a testification through which one enters the fold of Islam, and is the differentiator between belief and falsehood.
Besides this two Kalimahs, various other number of dua's (total 3, 5 or 6) are listed as Kalimah by various scholars from various sects of Islam. All of the known Kalimahs are listed below and included in this application.
1) Kalimah Tayyibah or The Word of Purity
2) Kalimah Shahadah or The Word of Evidence
3) Kalimah Tamjeed or The Word of Majesty
4) Kalimah Tawheed or The Word of Oneness
5) Kalimah Istighfar or The Word of Penitence
6) Kalimah Radde Kufr or The Word of Answer to Unbelief