It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) prayed in a mosque on a large mountain beyond“Arj.”This mosque is located at a distance of five miles while going towards Arj, and near this mosque there are also two or three graves, and many stones are placed on these graves. This place comes on the right side of the road. Sayyiduna Ibn Umar (may Allah be pleased with them both) used to set out from“Arj”after the sun had passed its zenith at noon, and upon reaching this mosque, he would perform the Zuhr prayer.