Would a man whose house was set on fire, and in it were copies of the Qur’an, be sinful if he took his important papers and belongings out of the house, and left the copies of the Qur’an to burn so that those who burned his house would be accused of disbelief? And would this action of his be considered an act of burning the Qur’an?

Casting the Mus'haf into impurities or burning it out of disrespect and disdain for it is an act of disbelief (kufr) by the agreement of all jurists. Leaving the Mus'haf in filth when one is able to protect it is forbidden (haram), and the perpetrator is treated like one who cast it away, because he is obligated to protect it but failed to do so. Whoever sees a paper with Qur'an or Hadith written on it and does not remove it from the path where it might be trodden upon has committed apostasy. If the perpetrator's intention was not to show disdain for the Mus'haf, but rather to seek revenge or out of malice, then his act is forbidden, but it does not amount to disbelief.