I heard the Messenger of Allah ﷺ say, "Seek out the weak among you, for you are granted provision and victory only through your weak ones."
حدثنا مؤمل بن الفضل الحراني حدثنا الوليد حدثنا ابن جابر عن زيد بن أرطاة الفزاري عن جبير بن نفير الحضرمي أنه سمع
سمعت رسول الله ﷺ يقول ابغوني الضعفاء فإنما ترزقون وتنصرون بضعفائكم
[Sahih] Reported by Tirmidhi, jihad, chapter on seeking victory through the poor among the Muslims, no. 1702, from the hadith of Abdul-Rahman bin Yazid bin Jabir, and he said, hasan sahih. Nasai also narrated it, no. 3181, and Ibn Hibban graded it sahih, no. 1620, as did Hakim.