Surah Ash-Shu'ara — Ayah 179

إِذْ قَالَ لَهُمْ شُعَيْبٌ أَلَا تَتَّقُونَ

When Shu'ayb said to them, "Will you not fear Allah?

إِنِّى لَكُمْ رَسُولٌ أَمِينٌ

Indeed, I am to you a trustworthy messenger.

وَمَآ أَسْـَٔلُكُمْ عَلَيْهِ مِنْ أَجْرٍ ۖ إِنْ أَجْرِىَ إِلَّا عَلَىٰ رَبِّ ٱلْعَـٰلَمِينَ

And I do not ask you for it any payment. My payment is only from the Lord of the worlds.

۞ أَوْفُوا۟ ٱلْكَيْلَ وَلَا تَكُونُوا۟ مِنَ ٱلْمُخْسِرِينَ

Give full measure and do not be of those who cause loss.