It is narrated from the Mother of the Believers, Sayyidah Aishah (may Allah be pleased with her), that the Messenger of Allah (peace and blessings be upon him) said: "Whoever eats seven of the Ajwah dates of Madinah during the day, poison will not harm him that day; and whoever eats them at night, poison will not harm him (that night)."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith is narrated from Anas (may Allah be pleased with him), through Sayyidah Aishah (may Allah be pleased with her), only with this chain, and Muhammad bin Yahya al-Qut'i is alone in narrating it. Sulayman bin Bilal and other narrators, however, narrated it from Abdullah bin Abd al-Rahman bin Ma'mar Abu Tuwalah, from Amir bin Sa'd, from his father (Sayyiduna Sa'd, may Allah be pleased with him)."
Hadith Referenceالمعجم الأوسط / باب الميم / 6000
Hadith Gradingمحدثین:إسناده ضعيف، فيه عبد الله بن إسحاق الهاشمي، وأبوه لم يُعرف
Hadith Takhrij«قال الهيثمي: فيه عبد الله بن إسحاق الهاشمي قال العقيلي له أحاديث لا يتابع منها على شيء وأبوه لم أعرفه وبقية رجاله ثقات «مجمع الزوائد ومنبع الفوائد، ج 5، ص 89»» «أخرجه الطبراني فى «الصغير» برقم: 31»