Does a Muslim exit the fold of Islam if he is assailed by doubts concerning the religion and then recants them?

What the questioner mentioned of satanic thoughts and whispers is forgiven by scholarly consensus, as long as they do not settle, this is based on the Prophet's (peace and blessings be upon him) saying: "Indeed, Allah has forgiven my nation for what they whisper to themselves, as long as they do not speak of it or act upon it." The dislike and repulsion of these whispers are signs of the soundness of faith. The questioner should completely disregard and ignore them.