Sa'id (may Allah have mercy on him) said: I spoke to Matar al-Warraq (may Allah have mercy on him) about selling copies of the Qur'an, and he said: Do you forbid me from selling copies of the Qur'an, when the two great scholars of this Ummah, or the two great jurists, namely al-Hasan (may Allah have mercy on him) and al-Sha'bi (may Allah have mercy on him), say: There is no harm in it?
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 11073