Musnad Ahmad 1013:29

Ishaq ibn Isa narrated to us, Malik narrated to us, from Abu Hazim, from Sahl ibn Sa’d al-Ansari, that the Messenger of Allah (may Allah bless him and grant him peace) was brought a drink and he drank from it. To his right was a young boy, and to his left were the elders. He said to the young boy, "Do you permit me to give [to] these [people]?" The boy said, "No, by Allah, I will not prefer anyone over myself for my share from you." He said: So the Messenger of Allah (may Allah bless him and grant him peace) placed it in his hand.