 पूर्वं राजर्षिवृत्त्या हि वनवासो विधीयते।प्रजा निक्षिप्य पुत्रेषु पुत्रवत्परिपालने।। 
 Leaving their sons to look after the subjects as their own children, the rajarsis in  ancient times used to retire into the forest as per practice. 