By Allah, this world (is so insigni- ficant in comparison) to the Hereafter that if one of you should dip his finger- (and wnile saying this Yahyg pointed with his forefinger) -in the ocean and then he should see as to what has stuck to it. This hadith has been narrated through another chain of transmitters also but with a slight variation of wording.
Sahih Muslim Book 53, Hadith 66