Hazrat Safiyyah bint Abi Ubaid narrates that during the time of Hazrat Umar, there was such a severe earthquake that the beds began to shake. At that time, Hazrat Abdullah bin Umar was performing prayer and he was completely unaware of the earthquake. On this occasion, Hazrat Umar delivered a sermon to the people and said that you have introduced new things into the religion and you have acted with haste. Hazrat Safiyyah says that to the best of my knowledge, after this he only said: If the earthquake happens again, I will leave from among you.