Extinguishing a Lamp or Candle
Interpreters believe that if one extinguishes a lamp or candle they hold, it may indicate misfortune; if they are a ruler, they might be deposed, and if a merchant, they might lose their wealth. They referenced a Quranic verse about the disappearance of light. As for a lamp in the house for a single person, it might signify marriage, and for a sick person, it could indicate recovery and well-being.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam