Usamah bin Zayd (may Allah be pleased with him) said: I sought permission for some people from among the Companions of the Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) gave them permission, while he (peace and blessings be upon him) had covered his head with a Ma'afiri cloak. He (peace and blessings be upon him) removed the cloak from his head, then said: "May Allah curse the Jews; they took the graves of their Prophets as places of prostration."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 390