What are the conditions of the testimony that there is no god but Allah?

Question:
May Allah reward you. The questioner says: A person told me that the testimony that there is no god but Allah does not lead its owner to Paradise unless he fulfills all of its conditions. Is this correct? And how do I know that I have fulfilled its conditions?

Answer:
Yes, "La ilaha illa Allah" is not merely a word spoken with the tongue; it is a word with a meaning, a signification, and a implication. The meaning of "La ilaha illa Allah" is that there is no deity worthy of worship in truth except Allah, and its implication is to worship none but Allah, so you do not associate anyone with Allah in any type of worship. This is the implication of "La ilaha illa Allah." Its conditions are included in these two aspects: in its meaning and in its implication. All the conditions fall within these. If you make it sincere, you will know its meaning. If you know its meaning and believe in it with your heart, (Glorified and Exalted is He), and that every deity other than Him is false, that is its meaning. What remains for you is to adhere to this meaning and signification, which is to implement it, to worship Allah with true worship, and to abandon the worship of anything other than Him.
And you restrict all types of worship to Allah (Mighty and Majestic). This is what is required of this word: knowing its meaning and acting upon its implication. These are its conditions in brief. Yes.