(192) بَابُ الشَّحْنَاءِ
Abu Hurayra reported that the Messenger of Allah, may Allah blesshim and grant him peace, said, "Do not hate one another and do not envyone another. Let the slaves of Allah be brothers."
Reference: Al-Adab Al-Mufrad 408
In-book reference: Book 22, Hadith 12
English translation: Book 22, Hadith 408