Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: "Whoever wants the Hereafter harms his worldly life, and whoever wants the world harms his Hereafter." And he commanded people to let what is perishing suffer loss for the sake of what is lasting.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8725