The Ruling on the One Who Abandons Action While Holding That Faith Is Speech, Action, and Belief

Question:
Honorable Shaykh, may Allah grant you success. Who is it that says faith is speech, action, and belief, that it increases and decreases, but that the one who abandons action does not become a disbeliever, rather he is under Allah’s will?

Answer:
Sometimes he becomes a disbeliever, such as the one who abandons the prayer; he becomes a disbeliever. This is based on authentic hadiths. Whoever abandons the prayer has committed disbelief. It is not the case with all actions; some of them are disbelief and some are sins.