Sayyiduna Anas (may Allah be pleased with him) narrated that the Prophet (peace and blessings be upon him) once specifically called the Ansar and then asked them, "Is there anyone among you who does not belong to your tribe?" They replied, "Only one of our nephews is such." The Prophet said, "A nephew is also considered part of the same people."
Hadith Referenceاللؤلؤ والمرجان / كتاب الزكاة / 633
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 61 كتاب المناقب: 14 باب ابن أخت القوم ومولى القوم منهم»