Musnad Ahmad 1153:1169

Abu Amir narrated to us, from Sulayman—meaning Ibn Bilal—from Sharik ibn Abdullah, from Ibn Abi Atiq, from Aisha, from the Prophet, peace and blessings of Allah be upon him, who said: "In the Ajwa of Al-Aliyah there is a cure—or an antidote—at the beginning of the morning on an empty stomach."