Prophet Salih came after Prophet Hud. He was sent to Thamud as a warner of them to believe in Allah. He went to his people and he told them of Allah. They refused to believe him unless he bought them a beautiful she-camel. So Allah sent them the most beautiful she-camel that any can see. People started to believe in Allah when they saw this. Others were so angry because Salih was getting followers so they destroyed the she-camel. They were punished by Allah.