Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
suyuti:14014a –
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السيوطي:١٤٠١٤a –

"خَيْرُكُم المدافعُ عن عَشِيرته ما لَمْ يَأثمْ".  

[د] أبو داود [هب] البيهقى في شعب الإيمان عن سعيد بن المسيب عن سُرَاقَةَ بن مالك بن جُعْشم المُدْلِجى

See similar narrations below:

Collected by Abū Dāwūd
abudawud:5120 – Aḥmad b. ʿAmr b. al-Sarḥ > Ayyūb b. Sūwayd > Usāmah b. Zayd > Saʿīd b. al-Musayyab > Surāqah b. Mālik b. Juʿshum al-Mudlijī

The Messenger of Allah ﷺ gave us an address and said: The best of you is the one who defends his tribe, so long as he commits no sin. Abu Dawud said: Abu Ayyub b. Suwaid is weak.  

أبو داود:٥١٢٠ – حَدَّثَنَا أَحْمَدُ بْنُ عَمْرِو بْنِ السَّرْحِ حَدَّثَنَا أَيُّوبُ بْنُ سُوَيْدٍ عَنْ أُسَامَةَ بْنِ زَيْدٍ أَنَّهُ سَمِعَ سَعِيدَ بْنَ الْمُسَيَّبِ يُحَدِّثُ عَنْ سُرَاقَةَ بْنِ مَالِكِ بْنِ جُعْشُمٍ الْمُدْلِجِيِّ قَالَ

خَطَبَنَا رَسُولُ اللَّهِ ﷺ فَقَالَ خَيْرُكُمُ الْمُدَافِعُ عَنْ عَشِيرَتِهِ مَا لَمْ يَأْثَمْ  

قَالَ أَبُو دَاوُدَ أَيُّوبُ بْنُ سُوَيْدٍ ضَعِيفٌ