Muhammad bin Jubayr bin Mut'im narrates from his father 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 relatives' share to Banu Hashim and Banu al-Muttalib, I and Uthman (may Allah be pleased with them both) came to him (peace and blessings be upon him). Then he narrated a hadith with the same meaning, except that he did not mention his (peace and blessings be upon him) saying: "They did not abandon us in the Jahiliyyah or in Islam"; and he (peace and blessings be upon him) said: "Banu Hashim and Banu al-Muttalib are one and the same, like this," and he (peace and blessings be upon him) interlaced his fingers.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12954