Hadith 14:232
Abu Bakr narrated to us, he said: Ubaydullah narrated to us, from Isra'il, from Mujza'ah bin Zahir, from his father, that he complained of his knees, so it was prescribed for him to soak in donkey's milk, but he disliked that.
حدثنا أبو بكر قال حدثنا عبيد الله عن إسرائيل عن مجزأة بن زاهر عن أبيه أنه اشتكى ركبتيه فنعت له أن يستنقع في ألبان الأتن فكره ذلك