“O
Abu Hurairah, be cautious, and you will be the most devoted
of people
to Allah. Be content, and you will be the most grateful of
people to
Allah. Love for people what you love for yourself, and you
will be a
(true) believer. Be a good neighbor to your neighbors, and
you will
be a (true) Muslim. And laugh little, for laughing a lot
deadens the
heart.”
Sunan Ibn Majah Book 37, Hadith 118