It is narrated from Sayyiduna Sunabih (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "I will go before you to the Pond (Hawd), and I will take pride in your great numbers before the other nations, so do not fight and kill one another after me."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7384