This world in comparison with the Hereafter is like the amount of water one of you gets when he dips his finger in the sea. Let him see what his finger returns with. [Muslim]

"«ما الدنيا في الآخرة إلا مِثْل ما يجعل أحدكم أُصْبُعَهُ في اليَمِّ، فلينظر بِمَ يَرْجع!». [صحيح.] - [رواه مسلم.]"