Quran (28:46): No Warner Was Sent For Several Generations To The Arabs
They are the Children of Ishmael, the son of Ibrahim. They practiced the religion of Ibrahim, which is mentioned in the Quran. They performed Hajj and Qurbani, said prayers, and observed Nikah, Talalq, and other religious directives. However, they distorted their beliefs by adopting Shirk and they were not certain about the resurrection in the afterlife. They had introduced innovations (Bidat) into their practices and had not received a warner for a long time.