In 1988 Mirza Tahir Ahmad Qadiani, the self styled khalifa of Jamaat Ahmadiyya, published a challenge of Mubahila (prayer duel) to the entire Muslim Ummah, addressing them as 'disbelievers, liars'.
Mnamo mwaka 1988 ilitolewa changamoto ya mubahila[maapizano]kwa umma wote wa kiislamu.