अभिवादनशीलस्य नित्यं वृद्धोपसेविनः । चत्वारि तस्य वर्धन्ते आयुर्धर्मो यशो बलम् ॥ १२१ ॥
He who habitually salutes and constantly pays reverence to the aged obtains an increase of four (things), (viz.) length of life, knowledge, fame, (and) strength.
english translation