We hear about Solomon's death in Surah Saba. Allah concealed his death from the jinns who worked for him. He died, leaning on his staff. He stayed like that for a long time, perhaps nearly a year. Until a creature had eaten through the stick and it fell, as did Solomon - showing to the jinn that he had died. It also became clear to Jinn and men alike that the Jinn do not know the Unseen as they (the Jinn) used to imagine and try to deceive people.

When We decreed Solomon’s death, nothing indicated to the ˹subjected˺ jinn that he was dead except the termites eating away his staff. So when he collapsed, the jinn realized that if they had ˹really˺ known the unseen, they would not have remained in ˹such˺ humiliating servitude.34:14