Is one who experiences whispers concerning Allah, the Messenger, and the Quran considered a disbeliever, and what should be done to get rid of these whispers?

Whoever is afflicted with whispers (waswas) must ignore them and not give in to them. Whatever overwhelms him, while he dislikes it, is forgiven, as Allah Almighty says: "So fear Allah as much as you are able." The Prophet, peace and blessings be upon him, was asked about the presence of whispers, and he said: "That is pure faith," meaning that disliking and hating these whispers is pure faith. Therefore, a Muslim must ignore whispers as much as he can, and he will not be held accountable for whatever overwhelms him.