HINDU SCHOLAR'S OPINION:
Some Hindu scholars say that after death of a person his hamzad transforms into ghost. This all is fiction story. In fact Hamzad does not die with the death of physical body and also he does not transforms into ghost or devil. Hamzad lives after the death of physical body, because there is no death for a soul, literally speaking, when any person dies, just his soul leaves his body and travels to heavens. You can also say that astral body goes to astral real but remember hamzad is not your astral body.
So, many Hindu scholars claim that hamzad of dead person can be invoked. There are many rituals and incantations in Hindu literature for such type of necromancies. Hamzad of a child is called "kacha kalwa" (کچا کلوا)or "kaacha kalwa"(کاچا کلوا) , whereas hamzad of an adult is called "paka kalva"(پکا کلوا).
MUSLIM SCHOLAR'S OPINION:
You know many spiritualists claim that, they can call spirits of dead persons and talk to them. According to Muslim scholars a spirit can never return back to this world but He / She stays in Barzakh(عالم برزخ). So according to Muslim scholars if a wizard can not call a spirit then what thing they call and talk to? This is a good question which gives us reply to our first question about life span of an Astral Body. Yes they does not evoke spirits of dead. and they can not evoke spirits of dead. They call the hamzad of a dead person and talk to his/her hamzad. I shall post an invocation ritual of necromancy art in favor of this claim. After talking to the hamzad of a dead person if some one insists that he called spirit of a dead person, I can not justify him. So naturally there arises a question that when hamzad will die? Of-course death is for every one who born. Near the End Of Times, when Allah will order Hazrat Israfil A.S to blow THE SOOR whole universe will tremble, again SOOR will be blown and every and every creature of Allah will be fainted. When third time and last time SOOR will be blown all the creatures of Allah will die, all angels, all devils, all djinns and all the Hamzads will die except some Respected Angles and Angels of Arsh of Allah. In hadith there is full detail about the order of death of remaining angels at last Hazrat Jibrail A.S will die with will and words of Allah as He created universe with KUN کن فیکون
