Al-Mukhtar b. Fulful said: I asked Anas b. Malik about the voluntary prayers after the afternoon prayer and he replied, “Umar used to forbid prayer after the afternoon prayer, but in the time of God’s Messenger we used to pray two rak'as after the setting of the sun before the sunset prayer.” I asked him whether God’s Messenger prayed these two and he replied, “He used to see us praying them, but neither commanded us nor forbade us to do so.” Muslim transmitted it.