Many a little makes a mickle

क्षणशः कणशश्चैव
विद्यामर्थञ्च साधयेत् ।
क्षणे नष्टे कुतो विद्या
कणे नष्टे कुतो धनम् ॥

One should acquire knowledge and wealth by learning something and saving every penny every moment. If a moment is wasted, how can knowledge be gained? If a penny is wasted, how can wealth be acquired?

Many a little makes a mickle.
A penny saved is a penny gained.