Musnad Ahmad 1017:123

'Ali ibn al-Hasan—who is Ibn Shaqiq—narrated to us, Husayn ibn Waqid informed us, from 'Abdullah ibn Buraydah, from his father: "That the Messenger of Allah (may Allah bless him and grant him peace) performed the 'aqiqah for al-Hasan and al-Husayn."