The Quran is the holy book of Islam. It is meant to be respected and appreciated. The issue with selling the Quran to a non-Muslim is the possibility of the Quran being mistreated and disrespected.

All our four mazhabs agree that it is prohibited for Muslims to sell the Quran to non-Muslim. However, this prohibition is limited to the pure Arabic form of the Quran and does not apply to translated versions of the Quran.

Similarly, it is inappropriate for non-Muslim sellers to sell a Quran even if the buyer is a Muslim.

A question may be raised, how would we spread Islam if we are unable to provide them with a Quran?

In this instance, it would be more appropriate to offer them translated versions of the Quran or books of Islamic teachings.