Kathir bin Abdullah narrated from his father, who narrated from his grandfather, that the Messenger of Allah (peace be upon him) said: "The mawla of a people is from among them, and the ally of a people is from among them, and the sister's son is from among them."
Hadith Referenceسنن دارمي / من كتاب السير / 2564
Hadith Gradingتحقیق (حسین سلیم أسد الدارانی):إسناده ضعيف لضعف كثير بن عبد الله بن عمرو بن عوف، [مكتبه الشامله نمبر: 2570]
Hadith Takhrijکثیر بن عبداللہ بن عمرو بن عوف کی وجہ سے یہ روایت ضعیف ہے، لیکن دوسری سند سے حدیث صحیح ہے۔ دیکھئے: [طبراني 12/17، 2] ، [مجمع الزوائد 957] ، [نصب الراية 148/4] ، [تلخيص الحبير 214/4]
Brief Explanation
(Commentary on Ahadith 2562 to 2564) That is, the freed slave of any tribe is considered a member of that tribe, and likewise, a nephew is also regarded as a member of the tribe. It is narrated in Sahih Bukhari and Sahih Muslim: The Messenger of Allah (sallallahu alayhi wa sallam) gathered the Ansar and said: “Is there anyone among you who is not from your tribe?” They replied, “There is the son of our sister.” He (sallallahu alayhi wa sallam) said: “A nephew is indeed a member of the tribe.”