صحيح البخاري
Sahih Bukhari
كتاب الوصايا
The Book of Wasaya (Wills and Testaments)
باب إذا وقف أو أوصى لأقاربه ومن الأقارب:
Chapter. If somebody founds an endowment (or bequeathes) his relatives by a will (is it permissible?). And who are considered as relatives.