This is an answer to those who requested for a book in paper-form with written scripture to be sent down from the sky to the Prophet (saws).
( لَقَالَ الَّذِينَ كَفَرُوا إِنْ هَٰذَا إِلَّا سِحْرٌ مُّبِينٌ … ) (…, the disbelievers would say, “This is not but obvious magic.”): From this, we can see that they deny the truth, intellectual proofs, scientific proofs and even tangible proofs. For the miracles brought by the Messengers were tangible proofs which were witnessed by those around them. Some of these people who witnessed these miracles would believe, some would deny them, and some would say: ‘This is obvious magic.”