Ibrahim says that Hazrat Urwah bin Zubair led two rak'ahs in the Maghrib prayer and then ended the prayer with salam, after which he spoke to the person sitting in front. That person said, "You have led only two rak'ahs." Hazrat Urwah then led one more rak'ah, ended the prayer with salam, and performed two prostrations of forgetfulness (sajda sahw). Then he said that the Messenger of Allah, peace and blessings be upon him, had also done the same.