Musannaf Ibn Abi Shayba 16:9

Abu Bakr narrated to us, he said: Ibn Numayr narrated to us, from Hisham, from Hafsa bint Sirin, from Salman bin Amir, that he heard the Messenger of Allah (may Allah bless him and grant him peace) saying: "With the boy is an 'aqiqah (sacrifice), so shed blood for him and remove the harm from him."