Maliks Muwatta Book 9, Hadith Number 72.

Section : How to Do the Prayer in General.

Yahya related to me from Malik from Nafi from Ibn Umar that the Messenger of Allah, may Allah bless him and grant him peace, used to pray two rakas before dhuhr and two rakas after it, two rakas after maghrib, in his house, and two rakas after isha. He did not pray after jumua until he had left, and then he prayed two rakas.