With this same chain: The Messenger of Allah (peace and blessings of Allah be upon him) said: “Whoever introduces a new thing into the religion or gives refuge to an innovator (one who introduces a new thing), upon him is the curse of Allah, the angels, and all the people. Neither any voluntary act nor any obligatory act of his will be accepted.”
Hadith Referenceمسند اسحاق بن راهويه / كتاب الفضائل / 560
Hadith Takhrij«بخاري ، كتاب فضائل المدينه ، باب حرم المدينه ، رقم : 1867 . مسلم ، كتاب الحج ، باب فضل المدينه الخ ، رقم : 1366 .»