A Dead Person Saying They Are Not Dead
Scholars have said that whoever sees a known dead person informing them that they are not dead, this may indicate the deceased's good state in the afterlife, based on the Quranic verse: "Rather, they are alive with their Lord, receiving provision." Also, seeing the deceased wearing green clothes may indicate their death was a form of martyrdom. Such a vision also indicates the good condition of the deceased's descendants in this world.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam