Sahih Al Bukhari Hadith Number 2293

Narrated Anas: `Abdur-Rahman bin `Auf came to us and Allah’s Messenger (peace be upon him) established a bond of brotherhood between him and Sa`d bin Rabi`a.

39  Kafalah
Hadith number 2293
Volume no 3
Chapter: 2 (The Statement of Allah jala jalaaluhu:”… To those also with whom you have made a pledge, give them their due portion by Wasiya…”)