He who played Nardashir (a game similar to backgammon) is like one who dyed his hand with the flesh and blood of swine.  

أَنَّ النَّبِيَّ ﷺ قَالَ مَنْ لَعِبَ بِالنَّرْدَشِيرِ فَكَأَنَّمَا صَبَغَ يَدَهُ فِي لَحْمِ خِنْزِيرٍ وَدَمِهِ