Silah bin Zufar (may Allah have mercy on him) narrates that whenever Sayyiduna Abu Bakr (may Allah be pleased with him) was mentioned in the presence of Sayyiduna Ali (may Allah be pleased with him), he would say: "You are mentioning the one who is foremost in outstripping (others); you are mentioning the one who is foremost in outstripping (others). By the One in whose Hand is my soul, we never strove to outstrip one another towards any good except that Sayyiduna Abu Bakr (may Allah be pleased with him) reached it before us."
Hadith Referenceالمعجم الأوسط / باب الميم / 7168
Hadith Gradingمحدثین:فيه أحمد بن عبد الرحمن بن المفضل الحراني لم يُعرف، وبقية رجاله ثقات
Hadith Takhrij«قال الهيثمي: فيه أحمد بن عبد الرحمن بن المفضل الحراني ولم أعرفه وبقية رجاله ثقات «مجمع الزوائد ومنبع الفوائد، ج 9، ص 46»»