The Faith of a Disbeliever
Scholars interpret that if a disbeliever dreams of believing, it may indicate that they will embrace faith in reality. Similarly, if a believer dreams of having faith, it means they will be truthful.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam
Note: These are traditional scholarly interpretations (ijtihad) drawn from a specific classical source — not a binding religious ruling, fortune-telling, or a prediction of the future.