The Great Epic of the Bhārata dynasty 2.5.101

2.5.101

nārada uvāca |
agnihotraphalā vedā dattabhuktaphalaṃ dhanam |
ratiputraphalā dārāḥ śīlavṛttaphalaṃ śrutam || 101 ||

"The Rishi answered,--"The Vedas are said to bear fruit when he that hath studied them performeth the Agnihotra and other sacrifices. Wealth is said to bear fruit when he that hath it enjoyeth it himself and giveth it away in charity. A wife is said to bear fruit when she is useful and when she beareth children. Knowledge of the Sastras is said to bear fruit when it resulteth in humility and good behaviour."