Qur'an 17:93

أَوْ يَكُونَ لَكَ بَيْتٌ مِّن زُخْرُفٍ أَوْ تَرْقَىٰ فِى ٱلسَّمَآءِ وَلَن نُّؤْمِنَ لِرُقِيِّكَ حَتَّىٰ تُنَزِّلَ عَلَيْنَا كِتَـٰبًا نَّقْرَؤُهُۥ ۗ قُلْ سُبْحَانَ رَبِّى هَلْ كُنتُ إِلَّا بَشَرًا رَّسُولًا

Or thou have a house of gold; or thou ascend up into heaven, and even then we will put no faith in thine ascension till thou bring down for us a book that we can read. Say (O Muhammad): My Lord be Glorified! Am I aught save a mortal messenger?