It is narrated from Sayyiduna Abu Bakr al-Siddiq (may Allah be pleased with him) that he said: "When the Messenger of Allah (peace and blessings be upon him) conquered Khaybar, the people fell upon the garlic and began eating it, so the Messenger of Allah (peace and blessings be upon him) said: 'Whoever eats from this plant (garlic), let him not come near our mosque.'"
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Mutarrif (may Allah have mercy on him) except Abthar (may Allah have mercy on him), and Ahmad bin Bahr (may Allah have mercy on him) is alone in narrating it, and this hadith is narrated from Sayyiduna Abu Bakr al-Siddiq (may Allah be pleased with him) only with this chain."
Hadith Referenceالمعجم الأوسط / باب الألف / 613
Hadith Gradingمحدثین:إسناده ضعيف، فيه أبو القاسم مولى أبي بكر لم يُعرف
Hadith Takhrij«قال الهيثمي: وفيه أبي القاسم مولى أبي بكر لم أجد من ذكره وبقية رجاله موثقون «مجمع الزوائد ومنبع الفوائد، ج 2، ص 17»»