(7) باب يَمِينِ الرَّجُلِ لِصَاحِبِهِ إِنَّهُ أَخُوهُ، إِذَا خَافَ عَلَيْهِ الْقَتْلَ أَوْ نَحْوَهُ
Narrated `Abdullah bin `Umar:
Allah's Messenger (ﷺ) said, "A Muslim is a brother of another Muslim. So he should neither oppress him nor hand him over to an oppressor. And whoever fulfilled the needs of his brother, Allah will fulfill his needs."
Reference: Sahih al-Bukhari 6951
In-book reference: Book 89, Hadith 12
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 9, Book 85, Hadith 83