The Prophet (peace and blessings be upon him) said:
"Through the intercession of one man from my Ummah, more people than the number of the tribe of Banu Tamim will enter Paradise."
Hadith Referenceصحیح الجامع الصغیر / حرف الياء / 8069
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[ت ك] عن عبد الله بن أبي الجدعاء. المشكاة ٥٦٠١.