Heitstrenging
...that while performing the Viking ritual of Heitstrenging Harald Hairfair swore not to cut or comb his hair until he conquered all of Norway?
...that while performing the <a class="mw-redirect" href="./Viking" id="mwCys" rel="mw:WikiLink" title="Viking">Viking</a> <a href="./Ritual" id="mwCyw" rel="mw:WikiLink" title="Ritual">ritual</a> of <b id="mwCy0"><a href="./Heitstrenging" id="mwCy4" rel="mw:WikiLink" title="Heitstrenging">Heitstrenging</a></b> <a class="mw-redirect" href="./Harald_Hairfair" id="mwCy8" rel="mw:WikiLink" title="Harald Hairfair">Harald Hairfair</a> swore not to cut or comb his hair until he conquered all of <a href="./Norway" id="mwCzA" rel="mw:WikiLink" title="Norway">Norway</a>?