There are books sold that contain questions, and prizes are purchased with their price to be distributed to the winners; what is the ruling on this practice?

The questioner : The cultural competition, our Shaykh, is an entity that prints a book and sells it, taking its price. This is currently found in mosques and Quran schools. The issue is occurring in a Quran school on a specific occasion, for example, the opening of schools or the influx of students to them. They print a book or booklet and sell it. In some cases, some Quran schools look to the benefactors and collect prizes before printing the book, then distribute them to them. The current problem is: what do we do with the money we obtained from selling the book at a nominal price? And there is another method where they sell the book at a doubled price, at the cost price, and buy the prizes from the price of the book and give them to the winners.

The Shaykh : I thought, my Shaykh, that my previous answer, which is based on the saying of Allah the Exalted, , would spare us from delving into the details of all these forms, because they are not intended for the sake of Allah, Mighty and Majestic. Is your opinion not this?