صحيح البخاري
Sahih Bukhari
كتاب الوصايا
The Book of Wasaya (Wills and Testaments)
باب إذا قال داري صدقة لله ولم يبين للفقراء أو غيرهم. فهو جائز، ويضعها فى الأقربين أو حيث أراد:
(I4) Chapter. When someone says,“My house is Sadaqa (i.e., gift of charit) for Allah’s sake," and does not specify whether it is for the poor or for some other people, then the Sadaqa is valid and he can give it to his relatives or whomever he wishes.