Walking with a Lamp by Night
Scholars have said that if one sees themselves walking at night carrying a lamp, it may indicate their devotion and worship if they are among those who practice it. Otherwise, it might signify their finding guidance to a solution for a matter they were confused about, as darkness symbolizes confusion and light symbolizes guidance. It could also suggest the dreamer's repentance from a sin they were committing.
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.