trustworthiness in commerce

۞ وَمِنْ أَهْلِ ٱلْكِتَـٰبِ مَنْ إِن تَأْمَنْهُ بِقِنطَارٍ يُؤَدِّهِۦٓ إِلَيْكَ وَمِنْهُم مَّنْ إِن تَأْمَنْهُ بِدِينَارٍ لَّا يُؤَدِّهِۦٓ إِلَيْكَ إِلَّا مَا دُمْتَ عَلَيْهِ قَآئِمًا ۗ ذَٰلِكَ بِأَنَّهُمْ قَالُوا۟ لَيْسَ عَلَيْنَا فِى ٱلْأُمِّيِّـۧنَ سَبِيلٌ وَيَقُولُونَ عَلَى ٱللَّهِ ٱلْكَذِبَ وَهُمْ يَعْلَمُونَ

And among the People of the Scripture is he who, if you entrust him with a great amount [of wealth], he will return it to you. And among them is he who, if you entrust him with a [single] coin, he will not return it to you unless you are constantly standing over him [demanding it]. That is because they say, "There is no blame upon us concerning the unlearned." And they speak untruth about Allāh while they know [it].

وَلَمَّا جَهَّزَهُم بِجَهَازِهِمْ قَالَ ٱئْتُونِى بِأَخٍ لَّكُم مِّنْ أَبِيكُمْ ۚ أَلَا تَرَوْنَ أَنِّىٓ أُوفِى ٱلْكَيْلَ وَأَنَا۠ خَيْرُ ٱلْمُنزِلِينَ

And when he had furnished them with their supplies, he said, "Bring me a brother of yours from your father. Do you not see that I give full measure and that I am the best of accommodators?