Musannaf Ibn Abi Shaybah 37287 — The words of Ibn Masud

It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that he said: Everyone among the people will wish on the Day of Resurrection that what he ate in this world had been bare sustenance (the amount of food needed to stay alive). And the morning and evening of this world, whatever their condition, will not harm any of you if there is no pain in his heart. That one of you should bite on an ember until it goes out is better than that a person should say about something Allah has decreed: If only this had not happened.