Surah Hud 11:86

First, he (Shu`ayb) prohibited them from cheating in business by decreasing the weights whenever they gave (products) to people.

He commanded them to give just measure and weight whether they were giving or receiving (in transactions). He also forbade them from causing mischief and corruption in the land. This was due to their practice of highway robbery along the roads. Abu Ja`far bin Jarir said,

(That which is left by Allah (after giving the rights of the people) is better for you,) "This means what you gain from your successful business dealings in which you have given just measure, is better for you than wrongfully taking the wealth of the people." Ibn Jarir said that this statement has been reported from Ibn `Abbas and I say it is similar to Allah's statement,

(Say: "Not equal are Khabith (all that is evil) and Tayyib (all that is good), even though the abundance of Khabith may please you.")5:100 Allah then says,

(And I am not a guardian over you.) This means a watcher over you people. In other words, "Do this for Allah and not to be seen by the people."

Pada ayat ini, Nabi Syuaib a.s. memberikan penjelasan kepada kaumnya bahwa keuntungan yang halal yang mereka peroleh setelah menyempurnakan takaran dan timbangan, adalah lebih baik dari keuntungan yang haram yang mereka peroleh dengan cara mengurangi takaran dan timbangan, jika mereka beriman. Karena iman itu benar-benar dapat membersihkan jiwa dari keserakahan dan ketamakan, dan mengisinya dengan sifat pemurah. Tetapi jika mereka tidak beriman, tentu tidak akan dapat merasakan sama sekali. Selanjutnya Nabi Syuaib a.s. menjelaskan kepada kaumnya, bahwa ia bukanlah orang yang ditugaskan memelihara atau menjaga mereka dari berbuat kejahatan-kejahatan. Dia hanya sekadar menyampaikan nasihat-nasihat dan petunjuk-petunjuk kepada mereka. Tugas itu sudah dilaksanakannya dengan sungguh-sungguh dan disertai dengan peringatan-peringatan tentang azab Allah kepada orang-orang yang tetap membangkang.