It is narrated from Sayyiduna As'ad bin Zurarah (may Allah be pleased with him) that he said: "I saw the Messenger of Allah (peace and blessings be upon him) delivering a sermon to the people; then he (peace and blessings be upon him) turned and looked around, and did not see Sayyiduna Abu Bakr (may Allah be pleased with him). So the Messenger of Allah (peace and blessings be upon him) said: 'Abu Bakr! Abu Bakr! Indeed, the Holy Spirit, Jibril (peace be upon him), has just informed me that the best of your Ummah after you is Abu Bakr al-Siddiq (may Allah be pleased with him).'"
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith is not narrated from Sayyiduna As'ad bin Zurarah (may Allah be pleased with him) except with this chain, and Harun al-Farwi (may Allah have mercy on him) is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 6448
Hadith Gradingمحدثین:إسناده ضعيف لضعف أبي غزية محمد بن موسى
Hadith Takhrij«قال الهيثمي: فيه أبو غزية محمد بن موسى وهو ضعيف «مجمع الزوائد ومنبع الفوائد، ج 9، ص 44»»