Jami` at-Tirmidhi 988
جامع الترمذي#988SahihAnas bin Malik narrated that:The Messenger of Alllah said: "(Real) Patience is at the first stroke of the calamity
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: 10:24