It is narrated from Hazrat Anas (may Allah be pleased with him) that when the Prophet (peace and blessings be upon him) arrived in Madinah Munawwarah, I was ten years old, and when he departed from this world, I was twenty years old. My mother used to encourage me to serve the Prophet (peace and blessings be upon him). Once, the Prophet (peace and blessings be upon him) came to our house. We milked a pet goat and mixed its milk with water drawn from the well of the house, and presented it to the Prophet (peace and blessings be upon him). On the right side of the Prophet (peace and blessings be upon him) was a Bedouin, and on the left side was Hazrat Siddiq Akbar (may Allah be pleased with him). When the Prophet (peace and blessings be upon him) had drunk from it, Hazrat Umar (may Allah be pleased with him) requested that it be given to Abu Bakr, but the Prophet (peace and blessings be upon him) gave the vessel of milk to the Bedouin and said, "First to the one on the right, then to the next." Hazrat Anas (may Allah be pleased with him) says that this is the Sunnah.