صحيح البخاري
Sahih Bukhari
كتاب الإكراه
The Book of Al-Ikrah (Coercion)
باب يمين الرجل لصاحبه إنه أخوه، إذا خاف عليه القتل أو نحوه:
Chapter. The (false) oath of a man that his companion is his brother when he fears that his companion might be killed or harmed (if he did not take such an oath).
