Ruling on a gift in exchange for a transaction service at an administrative office

Question:
A man works in an administration and helped another man to complete his work in that administration. After the work was completed, this man gave books to the man working in the administration. It is known that these books are inscribed with: "An endowment for Allah the Exalted." We ask your Eminence to respond to this: Is this a bribe, or what is it?

Answer:
The employee who seeks to complete his brother's transaction does not take a bribe, does not take money, and does not take a gift; because this is generally a bribe under the name of a gift. Even if they are endowed books, he does not take anything from them ever; because they are generally a bribe and assistance to him to delay the work of others, and to prioritize this man, or to give him things without right, and to do work for him without right. So the employee does not give anything ever.