Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: "Whoever recites five verses at night will never be recorded that night among the heedless; whoever recites a hundred verses is recorded among the devoutly obedient; whoever recites three hundred verses, a qintar (a great reward) is recorded for him; and whoever recites seven hundred verses has succeeded."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8695