It is narrated from Sayyiduna Jubayr bin Mut'im (may Allah be pleased with him) that when the Messenger of Allah (peace and blessings be upon him) gave the share of the relatives from Khaybar, namely to Banu Hashim and Banu al-Muttalib, Sayyiduna Uthman (may Allah be pleased with him) and I came to him (peace and blessings be upon him), and I said: O Messenger of Allah! These are your brothers, Banu Hashim; we do not deny their virtue. But what do you think about our brothers from Banu al-Muttalib? You (peace and blessings be upon him) gave to them and left us, while we and they are of the same standing in relation to you. He (peace and blessings be upon him) said: "They did not separate from us in the Jahiliyyah nor in Islam, and Banu Hashim and Banu al-Muttalib are one and the same thing." Then he (peace and blessings be upon him) interlaced his hands, one into the other.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 13074