(76) باب مَنِ اسْتَعَانَ بِالضُّعَفَاءِ وَالصَّالِحِينَ فِي الْحَرْبِ
Narrated Mus`ab bin Sa`d:
Once Sa`d (bin Abi Waqqas) thought that he was superior to those who were below him in rank. On that the Prophet (ﷺ) said, "You gain no victory or livelihood except through (the blessings and invocations of) the poor amongst you."
Reference: Sahih al-Bukhari 2896
In-book reference: Book 56, Hadith 110
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 145