We are often told that Muslims are commanded to be just and honest and it is certainly true that the Koran contains many verses requiring exactly this of Muslims (see for example: K.2:282; 3:18; 4:58; 6:152 to give but a few examples).
This article is only going to consider “Islamic honesty”. “Islamic Justice” is quite separate issue that involves the study of Shariah Law on which “Islamic Justice” is based.
In the matter of honesty, as is so often the case in the Koran, the verses noted above and other similar verses do not tell the whole story and a more detailed study shows that Islamic honesty is at best a variable and at worst a negotiable quantity, depending on what will benefit Islam most.
Consider the uses to which Islam puts both Zakat (the much vaunted “Islamic charity tax”), Khums (the 20% share for Allah/Muhammad of war-booty of all sorts) and Fai (war-spoils abandoned by an enemy, occupied territory etc.).