Musnad Ahmad 1153:471

Mansur ibn Salamah narrated to us, he said: Sulayman—meaning Ibn Bilal—informed us, from Sharik ibn Abdullah ibn Abi Namir, from Ibn Abi Atiq, from Aisha, that the Prophet, peace and blessings of Allah be upon him, said: "Indeed, in the dates of Al-Aliyah there is a cure," or he said, "an antidote, [if eaten] early in the morning on an empty stomach."