Nafi reported that a man came to Sayyidina Ibn Umar (RA) and conveyed salaam (greeting) of a certain person. He said, “I have learnt that he has introduced a form of religion. If he has done that then do not convey my salaam to him, for I had heard Allah’s Messenger (SAW) say: In this Ummah or, he said, in my Ummah there will be swallowing up (by earth), metamorphosing or raining of stones of the adherents of qadr.”
[Ibn Majah 4061, Abu Dawud 4613]