عبد الله بن عمر بن الخطاب
Ali ibn Abu Talib, of the "Rashidun" (rightly guided Caliphs), said; "He who innovates or gives protection to an innovator, there is a curse of Allah and that of His angels and that of the whole humanity upon him." Abdullah ibn Umar said: "Every innovation is misguidance, even if the people see it as something good."