Assalam alaykum, Anas Ibn Malik, may Allah be pleased with him, said: I heard the Messenger of Allah, peace be upon him, saying: "O People! Don't you see those who are taken by surprise and are disturbed while most secure, those who lived in error and followed their lusts, until the messenger of their Lord came to them. So they could not accomplish (in their life ) what they hoped for, nor could they return to what they lost. Rather they came to what they committed and they regretted what they left behind. However, regret did not help them since everything has been recorded. May Allah bestow His Mercy on a person who committed good deeds, spent his wealth moderately, spoke the truth, control his desires and did not let them control him, and disobeyed the urges of his false self so he did not perish." Culled from the "SERMONS OF THE PROPHET MUHAMMAD, Sallallahu alaihi Wasallam", by Abu Nasr M. Ibn Wad'an.