There is no basis in Islamic teachings to suggest that a face turning black after death is a sign of a bad end.
Many stories circulate about changes in a deceased person's face, including darkening, being indicative of their fate. However, according to Islamic scholars and teachings, these stories lack reliable supporting evidence from the Quran or the Sunnah (the teachings and practices of Prophet Muhammad, peace be upon him).
Therefore, the change in appearance after death, whether darkening or any other alteration, should not be interpreted as a sign of a good or bad ending. Muslims are advised not to be misled by unsubstantiated stories regarding this matter. The ultimate judgment rests with Allah (God).
