From Sahih Bukhari (Hadith 3502):
Narrated Jubair bin Mut`im:`Uthman bin `Affan went (to the Prophet) and said, "O Allah's Messenger (ﷺ)! You gave property to Bani Al-Muttalib and did not give us, although we and they are of the same degree of relationship to you." The Prophet (ﷺ) said, "Only Bani Hashim and Bani Al Muttalib are one thing (as regards family status)
Reference: Bukhari 3502