 Mufti Szynkiewicz also attended the Cairo caliphate congress in 1926.During the European Muslim Congress in 1935, he was called "one of the most articulate participants".In a dramatic episode at the congress, Mufti Szynkiewicz demanded that the director of the Istituto Superiore Orientale di Napoli, Count Bernardo Barbiellini Amidei, pronounce the profession of faith (shahada) three times before congress participants when the count appeared before the congress to ask that it formally recognize his adherence to Islam.