It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Every nation has its Magians, and the Magians of my nation are the Qadariyyah (those who deny predestination). If they fall ill, do not visit them, and if they die, do not attend their funerals."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 5584
Hadith Gradingحکم دارالسلام:إسناده ضعيف، عمر بن عبدالله مولي غفرة ضعفه ابن معين ، وقال : لم يسمع من أحد من أصحاب النبي ، وقال أحمد: أكثر أحاديثه مراسيل