4. Khasf of Bydaa :
In the book “The simaay of Mahdi (AJ) in Qur’an”, under the 47th verse of the surah Nisa’, states: The commander of the army of Sufyani will land on the desert of Bydaa, then a herald shouts from the sky: Eliminate these people. And the land of Bydaa will sink them into itself. Only three of them will survive. God will turn their face back, and they are from the clan of Kalab.