It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "The one who plays nard (backgammon) is like one who has dipped his hand in the flesh of swine, and the one who watches it is like one who has dipped his hand in the blood of swine."
Hadith Referenceالمعجم الأوسط / باب الميم / 9180
Hadith Gradingمحدثین:إسناده ضعيف لضعف ثابت بن زهير
Hadith Takhrij«قال الهيثمي: فيه ثابت بن زهير وهو ضعيف «مجمع الزوائد ومنبع الفوائد، ج 8، ص 113»» «أخرجه ابن أبي شيبة فى «مصنفه» برقم: 26671»