The Quran

قُل لا أَقولُ لَكُم عِندي خَزائِنُ اللَّهِ وَلا أَعلَمُ الغَيبَ وَلا أَقولُ لَكُم إِنّي مَلَكٌ ۖ إِن أَتَّبِعُ إِلّا ما يوحىٰ إِلَيَّ ۚ قُل هَل يَستَوِي الأَعمىٰ وَالبَصيرُ ۚ أَفَلا تَتَفَكَّرونَ

Muhammad Asad

Say [O Prophet]: "I do not say unto you, 'God's treasures are with me,'; nor [do I say], 'I know the things that are beyond the reach of human perception'; nor do I say unto you, 'Behold, I am an angel': I but follow what is revealed to me.¹ Say: "Can the blind and the seeing be deemed equal?² Will you not, then, take thought?"

This denial on the part of the Prophet of any claim to supernatural powers refers, primarily, to the demand of the unbelievers (mentioned in verse 37) that he should prove his prophetic mission by causing a "miraculous sign" to be bestowed on him. Beyond this specific reference, however, the above passage is meant to prevent any deification of the Prophet and to make it clear that he - like all other prophets before him - was but a mortal human being, a servant whom, God had chosen to convey His message to mankind. See also 7:188.
I.e., "Can those who remain blind and deaf to God's messages find their way through life equally well as those who have achieved a spiritual vision and guidance through God's revelation?"