Yahya related to me from Malik from Nafi from Ibn Umar that theMessenger of Allah, may Allah bless him and grant him peace, used topray two rakas before dhuhr and two rakas after it, two rakas aftermaghrib, in his house, and two rakas after isha. He did not pray afterjumua until he had left, and then he prayed two rakas.
USC-MSA web (English) reference: Book 9, Hadith 72
Arabic reference: Book 9, Hadith 403