Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "The people of the Qadariyyah sect and the people of the Murji'ah sect are the Magians of this Ummah. If they fall ill, do not visit them, and if they die, do not attend their funerals."
Al-Tabarani recorded it in al-Mu'jam al-Awsat, and its narrators are the narrators of the Sahih, except for Harun bin Musa al-Farwi, and he is thiqah (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب القدر / 11873