Islam is not just slogans, it must be practiced correctly

Imam Ali (AS): I will introduce Islam in such a way that no one has introduced it before like me. Islam is indeed submission to Allah (SWT), and submission is the same as absolute certainty, and certainty is the same as the true belief, and the true belief is the correct admission, and the true admission is the same as to carry out responsibilities properly, and carrying out responsibilities properly is like to practice the Religious Laws [1].

[1] Nahjul Balaghah, Wisdom 125.