Jamiat Tirmidhi: Hadith 2397

When 'Uthman would stop at a grave he would cry until his beard was soaked (in tears). It was said to him: 'The Paradise and the Fire were mentioned and you did not cry, yet you cry because of this?' So he said: 'Indeed the Messenger of Allah said: "Indeed the grave is the first stage among the stages of the Hereafter. So if one is saved from it, then what comes after it is easier than it. And if one is not saved from it, then what comes after it is worse than it." And the Messenger of Allah said: "I have not seen any sight except that the grave is more horrible than it."