Musannaf Ibn Abi Shayba 3:5958

Ibn Numayr narrated to us, from Ubayd Allah, from Nafi, from Safiyyah bint Abi Ubayd, who said: The earth shook during the time of Umar until the beds clattered. Abdullah ibn Umar happened to be praying at that time, and he did not realize it. Umar addressed the people and said—one of the two [narrators] said: "You have certainly hastened." He said: And I do not know him to have said anything other than: "If it returns, I will surely depart from among you."