It is narrated from Wahb bin Munabbih (may Allah have mercy on him) that he said: Indeed, Allah Almighty sent Shu'ayb (peace be upon him) to the people of Madyan, and they were the Companions of al-Aykah (the dense trees). Al-Aykah refers to dense, intertwined trees. Those people disbelieved in Allah, gave people short measure and weight, and misappropriated their wealth. Despite their disbelief, Allah Almighty had granted them great abundance in their provision and in the comforts of life, in order to give them respite. So Shu'ayb (peace be upon him) said to them: 'O my people, worship Allah; you have no god other than Him. And do not decrease the measure and the scale. Indeed, I see you in prosperity, and indeed, I fear for you the punishment of an all-encompassing Day.' [Surah Hud: 84] So what Shu'ayb (peace be upon him) said to his people and the answer his people gave him, Allah Almighty has related all of it in His Book.