It is advised by Canakya Pandit (Sanskrit): After the 16th year of the disciple or son, he should be treated as friend because if you chastise when he is grown up then he will break up - that is also another risk. So our request is that instead of chastising, with folded hands I request you, don't you become hippies again by growing hair. Keep your head cleansed at least once in a month. That is my request.
Letter to Ramesvara Maharaja (to all temples and G.B.C.), 26 November, 1976