The <a href="https://en.wikipedia.org/wiki/Statute_of_Kalisz" id="mwJw" rel="mw:WikiLink" title="Statute of Kalisz">Statute of Kalisz</a>, guaranteeing Jews safety and personal liberties and giving <i id="mwKA"><a href="https://en.wikipedia.org/wiki/Beth_din" id="mwKQ" rel="mw:WikiLink" title="Beth din">battei din</a></i> jurisdiction over Jewish matters, is promulgated by <a href="https://en.wikipedia.org/wiki/Bolesław_the_Pious" id="mwKg" rel="mw:WikiLink" title="Bolesław the Pious">Bolesław the Pious</a>, Duke of Greater Poland.