مَا لَكَ وَ لِلنَّعْلِ السَّوْدَاءِ أَ مَا عَلِمْتَ أَنَّهَا تُضِرُّ بِالْبَصَرِ وَ تُرْخِي الذَّكَرَ وَ هِيَ بِأَغْلَى الثَّمَنِ مِنْ غَيْرِهَا وَ مَا لَبِسَهَا أَحَدٌ إِلَّا اخْتَالَ فِيهَا.
“Once abu ‘ Abd Allah (a.s.), looked at one of his people who wore a black shoe. He (the Imam) said, ‘What have you to do with a black shoe, did you not know that it is harmful to the eyes, it slackens the penis, besides it is more expensive than others and whoever wears it, he shows arrogance in it?”’