It was said to Anas bin Malik (RA): You must have heard this that Allah's Messenger (ﷺ) said: There is no alliance (hilf) of brotherhood in Islam. Anas said: Allah's Messenger (ﷺ) established the bond of fraternity between the Quraish and the Ansar in his home.
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Anas reported Allah's Messenger (ﷺ) established fraternity between the Quraish and the Ansar in his house at Madinah.
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