The Story of the People of Madyan and the Call of Shu`ayb
Allah, the Exalted, says,
وإلى مدين
And to the Madyan people (We sent),
Allah, says, `We sent a Messenger to the people of Madyan.'
They were a tribe of Arabs who lived between the land of the Al-Hijaz and Ash-Sham, close to the land of Ma`an. Their land was known by the name of their tribe and was thus, called Madyan. Allah sent unto them the Prophet Shu`ayb and he was of the noblest of them in lineage.
For this reason, Allah said,
أخاهم شعيبا
their brother Shu`ayb.
قال يا قوم اعبدوا الله ما لكم من إله غيره وﻻ تنقصوا المكيال والميزان
He said: "O my people! Worship Allah, you have no other god but Him, and give not short measure or weight.
Shu`ayb commanded them to worship Allah alone without associating any partners with him. He also prohibited them from cheating in their weights and measures (for business transactions).
إني أراكم بخير
I see you in prosperity,
meaning, `in your livelihood and your provisions. And verily, I fear that you will be deprived of this bounty that you are enjoying by violating Allah's prohibitions.'
وإني أخاف عليكم عذاب يوم محيط
and verily, I fear for you the torment of a Day encompassing.
This means the abode of the Hereafter