Musnad Ahmad 32:1327

Hammad ibn Khalid narrated to us, Abdullah—meaning al-Umari—narrated to us, he said: I heard Umm Yahya, she said: I heard Anas ibn Malik saying: A son of Abu Talha died, and the Prophet (peace and blessings of Allah be upon him) prayed over him. Abu Talha stood behind the Prophet (peace and blessings of Allah be upon him), and Umm Sulaym stood behind Abu Talha, like the comb of a rooster, and he gestured with his hand.