Who will take these statements from me, so that he may act upon them, or teach one who will act upon them? So Abu Hurairah said: I said: 'I shall O Messenger of Allah!' So he (s.a.w) took my hand and enumerated five (things), he said: Be on guard against the unlawful and you shall be the most worshiping among the people, be satisfied with what Allah has alloted for you and you shall be the richest of the people, be kind to your neighbor and you shall be a believer, love for the people what you love for yourself and you shall be a Muslim. And do not laugh too much, for indeed increased laughter kills the heart.

Increase in remembrance of the severer of pleasures. Meaning death.

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 Allah 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.