ball tampering
...that a fielder in cricket may only alter the ball condition by removing mud, drying or polishing it without use of an artificial substance, else he is guilty of ball tampering?
...that a <a href="./Fielding_(cricket)" id="mwAv0" rel="mw:WikiLink" title="Fielding (cricket)">fielder</a> in <a href="./Cricket" id="mwAv4" rel="mw:WikiLink" title="Cricket">cricket</a> may only alter the <a href="./Cricket_ball" id="mwAv8" rel="mw:WikiLink" title="Cricket ball">ball</a> condition by removing mud, drying or polishing it without use of an artificial substance, else he is guilty of <b id="mwAwA"><a href="./Ball_tampering" id="mwAwE" rel="mw:WikiLink" title="Ball tampering">ball tampering</a></b>?