▁is ▁called ▁bo ab ey l un . ▁ ▁Mong ol ian ▁b ab ies ▁Mong ol ian ▁children ▁get ▁their ▁first ▁ha irc ut ▁in ▁early ▁ages ▁between ▁ 2 - 5 . ▁ ▁Depending ▁on ▁the ▁lun ar ▁calendar , ▁boys ▁receive ▁their ▁first ▁hair ▁cut ▁in ▁their ▁odd ▁year ▁and ▁girls ▁in ▁even ▁year . ▁The ▁rit ual ▁of ▁cutting ▁the ▁first ▁hair ▁is ▁called ▁Da ah ' ▁Ur ge eh . ▁It ▁is ▁a ▁big ▁occasion ▁for ▁a ▁whole ▁family ▁when ▁guests ▁are ▁invited . ▁Each ▁guest ▁cut s ▁a ▁str and ▁of ▁hair , ▁saying ▁his ▁wishes ▁to ▁the ▁child , ▁and ▁gives ▁a ▁gift . ▁ ▁Orth odox ▁Jews ▁ ▁Orth odox ▁boys ▁ ▁Many ▁Orth odox ▁and ▁Has id ic ▁Jewish ▁boys ▁get ▁their ▁first ▁ha irc ut ▁when ▁they ▁are ▁three ▁years ▁old . ▁The ▁hair - cut ting ▁ceremony ▁is ▁known ▁in ▁Y idd ish ▁as ▁the ▁ups her en ish ▁or ▁ups her in ▁( she ar ▁off ), ▁and ▁in ▁Heb rew ▁as ▁h ala q ah ▁( sm o othing ). ▁ ▁In ▁Israel , ▁there ▁are ▁also ▁non - rel ig ious ▁families ▁who ▁ad here ▁to ▁this ▁custom ▁and ▁do ▁not ▁cut ▁their ▁sons ' ▁hair ▁until ▁the ▁age ▁of ▁three . ▁A ▁mass ▁hair ▁cutting ▁ceremony ▁is ▁held ▁on ▁the ▁hol iday ▁of ▁Lag ▁Ba O mer ▁at ▁the ▁tomb ▁of ▁Rab bi ▁S ime on ▁bar ▁Y oh ai ▁in ▁the ▁Gal ile an ▁town ▁of ▁Mer