It is narrated from Sayyiduna Sahl bin Sa'd al-Sa'idi (may Allah be pleased with him) that a drink was brought to the Messenger of Allah (peace and blessings be upon him), and he (peace and blessings be upon him) drank from it. On his (peace and blessings be upon him) right was a boy, and on his left were elderly men. He (peace and blessings be upon him) said to the boy: "Do you permit me to give this to the elders?" The boy said: By Allah, O Messenger of Allah, I will not give preference to anyone over my share from you. So the Messenger of Allah (peace and blessings be upon him) placed the vessel in his hand.
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 5748