Musnad Ahmad 32:1076

Hajjaj narrated to us, he said: Shu'bah narrated to us, he said: I heard 'Abdullah ibn al-Mukhtar, from Musa ibn Anas narrating from Anas, "That he, the Messenger of Allah (may Allah bless him and grant him peace), and his mother or his maternal aunt were present. He (the Prophet) led them in prayer, and he placed Anas to his right, and his mother and his maternal aunt behind them." Shu'bah said: "'Abdullah ibn al-Mukhtar was younger than me."