"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."
Jami` at-Tirmidhi Book 36, Hadith 101
← Previous Hadith "On the Day of Judgement, when the people who were tried (in this world) are given their rewards, the people who were pardoned (in life), will wish that their skins had been cut off with scissors while they were in the world."

This Hadith is Gharib, we do not know of it with this chain except through this route. Some of them have reported something similar to this Hadith from Al-A`mash, from Talhah bin Musarrif from Masruq.

Jami` at-Tirmidhi Book 36, Hadith 100 Next Hadith → "In the end of time there shall come men who will swindle the world with religion, decieving the people in soft skins of sheep, their tongues are sweeter than sugar and their hearts are the hearts of wolves. Allah says: 'Is it me you try to delude or is it against me whom you conspire? By Me, I swear to send upon these people,among them, a Fitnah that leaves them utterly devoid of reason."

Jami` at-Tirmidhi Book 36, Hadith 102