question #1 Sahih al-Bukhari 2294, Book 39, Hadith 5 : What is the significance of alliances in Islam according to the teachings of the Prophet?

I heard Anas bin Malik, “Have you ever heard that the Prophet (ﷺ) said, ‘There is no alliance in Islam?’ ”
He replied, “The Prophet (ﷺ) made alliance between Quraish and the Ansar in my house.”