It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Today you are upon a (true) religion, and I will take pride in your great numbers over the other nations (on the Day of Resurrection), so do not turn back on your heels (that is, away from the religion) after me."
Imam al-Tabarani (may Allah have mercy on him) said: "Only Hammad bin Zayd (may Allah have mercy on him) narrated this hadith from Mujalid (may Allah have mercy on him)."
Hadith Referenceالمعجم الأوسط / باب الميم / 5114
Hadith Takhrij«أخرجه أحمد فى «مسنده» برقم: 15039، وأبو يعلى فى «مسنده» برقم: 2133»