Jami` at-Tirmidhi 2605
جامع الترمذي#2605SahihHarithah bin Wahb Al-Khuzai narrated that the Messenger of Allah (s.a.w) said:"Should I not inform you about the people of Paradise: They are every humble and weak person, who if he were to make an Oath by Allah, He would fulfill it. Should I not inform you about the people of the Fire: They are every prideful, swaggering, ill-speaking person
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 Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 39:33