KALIMAH TAYYIBAH - THE WORD OF PURITY
There is no god except Allah.Muhammad is His messenger.
Hadrat Zaid bin ‘Arqam (R.A) narrated that the Messenger of Allah (pbuh) said: “Whoever says La ilaaha illal-laahu… sincerely will enter the Paradise.” It was said: And what is the [sign of] sincerity? He said: “That this kalimah stops him from those things which Allah has forbidden.” (Tabaraani in Awsat-ul-Kabeer)
“Do you not see how Allah puts forth the likeness of a good word (kalimah tayyibah)? It is like a good tree, whose root is firmly fixed and whose branches reach to the sky. It brings forth its fruit in all seasons by the command of its Lord. And Allah sets forth parables for men, so that they may take heed. And the likeness of an evil word (kalimah khabeetha- a word of shirk) is like an evil tree, which is uprooted from the face of the earth, and has no stability.” (Quran XIV: 24-26)