The ruling on what a purchasing agent takes from the price of the goods

Question: We ask you to please clarify the opinion on a widespread phenomenon, which is: purchasing agents appointed by their companies or institutions to buy goods obtain a sum of money for themselves through the purchasing process. This process usually occurs in two forms:

The first form: The purchasing agent asks the seller to put a price on the invoice that is higher than the actual price of the goods, and the purchasing agent takes this price difference for himself.

The second form: The purchasing agent asks the seller to write an invoice for the actual market price of the goods, then asks the seller for a sum of money for himself that corresponds to the quantity of goods purchased, and this is in exchange for the purchasing agent encouraging him to always visit this shop.
We ask you to please provide guidance, and may Allah reward you with good.

Answer: Praise be to Allah, and may peace and blessings be upon the Messenger of Allah. After that:
Both of these forms that the questioner asked about are forbidden, and both are betrayal—whether he agreed with the owner of the goods to increase the price above the known market price so that he could take the increase, or whether he gave him something between them and did not put in the invoice anything but the known price—all of this is forbidden, and all of this is betrayal.
And all of this is among the causes that lead the agent to choose from the sellers whoever suits him, and he does not care about the price that benefits the company and clears the conscience, but rather he cares about the thing by which he obtains his desire from the sellers, and he does not care thereafter about being diligent in the company's interest, and seeking the appropriate low price for the sake of advising it and fulfilling the trust. So all of this is not permissible because it is betrayal.