Riferimento su Deuteronomio 22:12

To educate him - All this only applies when he has not yet reached the age of thirteen, but from the age of thirteen onwards, he is obligated to fulfill the mitzvah of ציצית just like an adult. And that which is written in the Drashos Mahari"l, in the laws of marriage, that it is the practice for grown youths not to wrap themselves with ציצית until they have married women, and they ascribe this to the implication of the verses which states "You should make for yourself tassels", and close to this verse it is written,"If a man takes a wife" - this is a surprising statement, [for it is unthinkable] that as long as he has not yet married a woman, he should sit idly neglecting the mitzvah of ציצית.