Jami` at-Tirmidhi 2019
جامع الترمذي#2019SahihIbn 'Umar narrated that the Messenger of Allah said:"The believer is not one who curses others
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan
Zubair Ali ZaiIsnaad Hasan
In-book reference: 27:125