Is the saying "seeing the dead is true" correct, whether the seeing is in a dream or hearing a voice? Is the meeting of the souls of sleepers with the dead a reality? What does seeing a deceased relative in a dream mean? Is it a vision of their state in the grave or merely dreams?

This statement is not entirely accurate, because Satan may appear to a sleeper in the guise of a deceased person. The only exception to this is the Prophets, for Satan cannot assume their form, due to the words of the Messenger of Allah, peace and blessings be upon him: "Whoever sees me in a dream has indeed seen me, for Satan cannot impersonate me."