Mustawrid, a brother of Banu Fihr, said:
"I heard the Messenger ofAllah (ﷺ) say: 'The likeness of this world in comparison to theHereafter is that of anyone of you dipping his finger into the sea:let him see what he brings forth.'" (DE)
English reference (DE): Vol. 5, Book 37, Hadith 4108 (DE)
Arabic reference (DE): Book 37, Hadith 4247 (DE)