Is it permissible to transport Christian religious books via Islamic shipping companies?

It is not permissible to sell books of disbelief or to transport them to those who use them, because there is no lawful benefit in them, and because they are a means to what is forbidden, thus constituting assistance in sin and transgression. Al-Nawawi mentioned, quoting the Shafi'is, that it is not valid to sell books of disbelief; rather, they must be destroyed, and similarly, books of magic, astrology, sorcery, and philosophy. Maliki jurists explicitly stated the prohibition of selling and leasing anything that leads to what is forbidden. Therefore, it is not permissible to assist in transporting Christian books because it falls under the category of cooperation in wickedness and immorality. Transporting these books to those who use them for misguidance is more dangerous than transporting intoxicants.