Nardashir (a game similar to backgammon) is like one who dyed his hand with the flesh and blood of swine.
In-book : Book 41, Hadith 11
USC-MSA web (English) : Book 28, Hadith 5612 (deprecated)
41. The Book of Poetry
باب فِي التَّحْذِيرِ مِنَ الْكَذِبِ عَلَى رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ