Sahih Bukhari

Narrated Usaid bin Hudair:A man from the Ansar said, ""O Allah's Messenger (ﷺ)! Will you appoint me as you have appointed so-and-so?"" The Prophet (ﷺ) said, ""After me you will see others given preference to you; so be patient till you meet me at the Tank (i.e. Lake of Kauthar). (on the Day of Resurrection)