صحيح البخاري
Sahih Bukhari
كتاب التوحيد
The Book of Tauhid (Islamic Monotheism)
باب قول الله تعالى: {أنزله بعلمه والملائكة يشهدون} :
Chapter. The Statement of Allah:“... He (Allah) has sent it (the Quran) down with His Knowledge, and the angels bear witness...”(V.4:166)