(120) بَابُ الْمُسْلِمُ مَرْآةُ أَخِيهِ
Abu Hurayra said, "A believer is the mirror of his brother. Whenhe sees a fault in it, he should correct it." (ID)
Reference (ID): Al-Adab Al-Mufrad 238 (ID)
In-book reference (ID): Book 12, Hadith 1 (ID)
English translation (ID): Book 12, Hadith 238 (ID)