مُحَمَّدُ بْنُ يَحْيَى عَنْ عَبْدِ اللَّهِ بْنِ مُحَمَّدٍ عَنْ عَلِيِّ بْنِ الْحَكَمِ عَنْ أَبَانِ بْنِ عُثْمَانَ عَنْ يَحْيَى بْنِ أَبِي الْعَلَاءِ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) قَالَ بَعَثَ أَمِيرُ الْمُؤْمِنِينَ ( عليه السلام ) عَبْدَ اللَّهِ بْنَ الْعَبَّاسِ إِلَى ابْنِ الْكَوَّاءِ وَ أَصْحَابِهِ وَ عَلَيْهِ قَمِيصٌ رَقِيقٌ وَ حُلَّةٌ فَلَمَّا نَظَرُوا إِلَيْهِ قَالُوا يَا ابْنَ عَبَّاسٍ أَنْتَ خَيْرُنَا فِي أَنْفُسِنَا وَ أَنْتَ تَلْبَسُ هَذَا اللِّبَاسَ فَقَالَ وَ هَذَا أَوَّلُ مَا أُخَاصِمُكُمْ فِيهِ قُلْ مَنْ حَرَّمَ زِينَةَ اللَّهِ الَّتِي أَخْرَجَ لِعِبادِهِ وَ الطَّيِّباتِ مِنَ الرِّزْقِ وَ قَالَ خُذُوا زِينَتَكُمْ عِنْدَ كُلِّ مَسْجِدٍ .
6. Muhammad ibn Yahya has narrated from ‘Abd Allah ibn Muhammad from Ali ibn al-Hakam from Aban ibn ‘Uthman from Yahya ibn al-‘Ala’ who has said the following: “Abu ‘Abd Allah , has said that ’Amir al-Mu’minin sent ‘Abd Allah ibn al-‘Abbas to ibn al-Kawwa’ and his people. He was wearing a shirt of fine fabric and a gown. They looked at him and said, ‘O ibn al- ‘Abbas, you are the better among us in our belief and you wear this kind of clothes.’ He replied, ‘This is the first thing about which I disagree with you. “Who has made it unlawful to maintain beauty and to eat the pure foods which Allah has created for His servants?” (7:32) and He also has said, “dress well when attending the mosques.” (7:31)’” 