Jami` at-Tirmidhi 2403
جامع الترمذي#2403Da'ifAbu Hurairah narrated that the Prophet(s.a.w) said:"There is no one who dies but he shall regret." They said: "What shall he regret over O Messenger of Allah?" He said: "If he was a good doer, he regrets that he did not do more, and if he was an evil doer, he regrets that he did not stop
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirVery Daif
Al-AlbaniVery Daif
Bashar Awad MaaroufHasan
Zubair Ali ZaiDaif
In-book reference: 36:101