Mukhtasar Muslim

Narrated from Sayyiduna Sahl bin Sa'd Sa'idi (may Allah be pleased with him) that a drink was brought to the Messenger of Allah (peace and blessings of Allah be upon him), so he drank from it. On his right was a boy and on his left were elderly people. The Prophet (peace and blessings of Allah be upon him) said to the boy, "Do you permit me to give it to the elders before you?" He replied, "No, by Allah, I do not wish to give up my share to anyone else." Upon hearing this, the Prophet (peace and blessings of Allah be upon him) handed it to the boy.