"Go! Take these for hitkaddeshut (purification) and purify yourself with them and pay expenses for them, that they may cut their hair; then all shall have da'as that there is no emes to the rumor; then it shall be clear that you yourself are in agreement and frum regarding the darkhei haTorah and that you are charedi and shomer mitzvot, in the ranks of those who practice Orthodox Judaism." [BAMIDBAR 6:1-21, Mishnah tractate Nazir]