Imam Urwah bin al-Zubayr (may Allah have mercy on him) narrates: I said to the Mother of the Believers Sayyidah Aishah (may Allah be pleased with her): "Dear aunt! When I reflect upon your affairs, some things amaze me and some do not. I found you to be the most learned of people in fiqh, so I thought: what is there to prevent that! You are the wife of the Messenger of Allah (peace and blessings be upon him) and the daughter of Sayyiduna Abu Bakr al-Siddiq (may Allah be pleased with him). And I found you knowledgeable about the genealogies of the Arabs and their days (historic events), so I said: what is there to prevent that! Your father was the great scholar of Quraysh. But the height of my amazement is that I found you knowledgeable in medicine as well; so where did you learn this?" Then the Mother of the Believers Sayyidah Aishah (may Allah be pleased with her) said: "O Urayyah! the Messenger of Allah (peace and blessings be upon him) used to fall ill frequently, so we used to treat him."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Muhammad bin Abd al-Rahman al-Mulayki except Khallad bin Yazid al-Bahili."
Hadith Referenceالمعجم الأوسط / باب الميم / 6067
Hadith Takhrij«أخرجه الحاكم فى «المستدرك» برقم: 6804، 7519، وأحمد فى «مسنده» برقم: 25018، والطبراني فى «الكبير» برقم: 295»