Musannaf Ibn Abi Shaybah 31726 — What a man says when ghouls are seen

Yusayr bin Amr said: I mentioned to Sayyiduna Umar (may Allah be pleased with him) the ghilan jinn, who change their form and lead people astray from the path. He said: "Nothing has the power to change the creation of Allah from how Allah created it. But they have sorcerers like your sorcerers. So when you see anything of that kind, call the adhan."