Abdullah bin Malik (may Allah be pleased with him) says that once I prayed with Sayyiduna Ibn Umar (may Allah be pleased with them both) at Muzdalifah. He led three rak'ahs of Maghrib and two rak'ahs of Isha with a single iqamah. Khalid bin Malik asked him about this, so he replied: "I have prayed these prayers at this place with the Messenger of Allah (peace and blessings be upon him) with a single iqamah."