Shu`ayb and His Preaching to the Dwellers of Al-Aykah

The companions of Al-Aykah were the people of Madyan, according to the most correct view. The Prophet of Allah Shu`ayb was one of them, but it does not say here, their brother Shu`ayb, because they called themselves by a name denoting their deification of Al-Aykah, which was a tree which they used to worship; it was said that it was a group of trees which were tangled, like trees in a thicket. For this reason, when Allah said that the companions of Al-Aykah denied the Messengers, He did not say, "When their brother Shu`ayb said to them." Rather, He said:

إِذْ قَالَ لَهُمْ شُعَيْبٌ

وَأَمْطَرْ‌نَا عَلَيْهِم مَّطَرً‌ا ۖ فَسَاءَ مَطَرُ‌ الْمُنذَرِ‌ينَ

and subjected them to a terrible rain. So evil was the rain of those who were warned. - 26:173