“And give full measure whenever you measure, and weigh with a balance that is true” (Qur’an 17:35)

﷽
It was narrated that ‘Uqbah bin ‘Amir said:
“I heard the Messenger of Allah (saw) say: ‘The Muslim is the brother of another Muslim, and it is not permissible for a Muslim to sell his brother goods in which there is a defect, without pointing that out to him.”‘
Source: (https://sunnah.com/ibnmajah:2246)
Narrated Abu Hurairah:
That the Messenger of Allah (saw) passed by a pile of food. He put his fingers in it and felt wetness. He said: ‘O owner of the food! What is this ?’ He replied: ‘It was rained upon O Messenger of Allah.’ He said: ‘Why not put it on top of the food so the people can see it?’ Then he said: ‘Whoever cheats, he is not one of us.'”
He said: There are narrations on this topic from Ibn ‘Umar, Abu Al-Hamra’, Ibn ‘Abbas, Buraidah, Abu Burdah bin Niyar, and Hudhaifah bin Al-Yaman.
[Abu ‘Eisa said:] The Hadith of Abu Hurairah is Hasan Sahih Hadith. This is acted upon according to the people of knowledge. They dislike cheating and they say that cheating is unlawful.
Source: (https://sunnah.com/tirmidhi:1315)
A Muslim is one who does not cheat others. We do not cheat our employers by looking for short cuts or by not giving them the best of our efforts. We do not cheat our employees by not giving them what is due to them. Or by trying to extract more from them then what is fair.
We do not cheat others by being inconsistent. We have one measure for one group and another measure for another group. We do no cheat others by being dishonest about what we sell to them in terms of products or services.
One of our dear brothers from Turkey mentioned to us about a person in Germany who approached a man selling trinkets. (Neither the seller nor the buyer are Muslim).
The buyer says to the one selling, “I do not have this amount can you lower the cost of the item as it is for my mother?” The seller agreed to this and lowered the amount substantially. He is under no obligation to do so.
However, the buyer was someone who was looking out for people who would be generous. Thus, the buyer wanted to give the seller 1000 Euros for his act of generosity. Even then the seller said, “If you have the amount I am selling the item for simply give me that amount!”
Subhan’Allah. This is from the non-Muslims. May Allah (swt) guide them both.
Yet, our dear brother from Turkey informed us that if you are a foreigner in Istanbul and the driver knows you are a foreigner they will extract from you an exorbitant amount.
This is unfortunately true in many countries where Muslims are the majority. This is bad because not only are you committing a big sin, you are giving Islam a bad name and by extension due to your greed and not looking at the bigger picture you can ruin the economic opportunity of your respective country.
Stealing is certainly a sin.
But this all becomes problematic when there are certain schools of jurisprudence that have problematic rulings when it comes to Non-Muslims. Thus, many Muslims may feel encouraged to do the things that they do by these rulings.
May Allah (swt) straighten our affairs.
Again, the problematic thinking of certain Muslims who think if they proclaim the testimony of faith or they simply proclaim themselves to be Muslims that they can go on living and doing as they please.
For example:
May Allah (swt) straighten our affairs.
May Allah (swt) Guide the Ummah.
May Allah (swt) Forgive the Ummah.