Pagan Architecture and Art in Islamic Law
A Muslim author wrote an article for Tony Blair Faith Foundation. He is trying to prove to us that the damage to cultural arts and monuments by ISIS is not according to Islam.
There is scant regard for the example of the early Muslims.Furthermore, when the companions of the prophet and earlier generations of Muslims conquered lands containing historic sites like Petra, Nimrud, the Pyramids of Giza, the Bamiyan Buddhas and Palmyra, they did not feel compelled to destroy the historical monuments.
When the Persian capital of Ctesiphon in province of Khvarvaran (today Iraq) fell to the Muslims in 637 under the military command of Sa'ad ibn Abi Waqqas during the caliphate of Umar, the palaces and their archives were burned. The Tarikh al-Tabari describes that Waqqas wrote to Caliph Umar asking what should be done with the books at Ctesiphon. Umar wrote back: "If the books contradict the Qur'an, they are blasphemous. On the other hand, if they are in agreement, they are not needed, as for us Qur'an is sufficient." Thus, the huge library was destroyed and the books, the product of the generations of Persian scientists and scholars were thrown into fire or the river Euphrates.
Persecution of Zoroastrians increased significantly under the Abbasids. Their temples and sacred fire shrines were destroyed.