Hadith #2253 (Jami' al-Tirmidhi)
Book: Chapters On Al-Fitan
Narrator(s): Abdur Rahman bin Thabit عبد الرحمن بن ثابت بن ثوبان العنسي, Abu Hurairah, Ali bin Thabit al-Jzry علي بن ثابت الجزري أبو أحمد, Ata'a bin Qrh al-Slwly عطاء بن قرة السلولي, Muhammad bin Hatim Al-Samayn محمد بن حاتم البغدادي - السمين

“It is not for the believer to humiliate himself.” They said: “How does he humiliate himself?” He said: “By taking on a trial which he can not bear.”

Source: https://parallelquran.com/hadith/jami-al-tirmidhi-2253/