Pedzisa mutsara unotevera: Al-Qassam akatizira kuHaifa pashure pokunge kupandukira kweSyria kwaakanga atungamirira kwakundikana. Maererano naShai Lachman, pakati pa1921 na1935 al-Qassam aiwanzoshanda pamwe chete naMufti weJerusalem Mohammad Amin al-Husayni. Vaiwirirana, uye kugadzwa kwakasiyana-siyana kwaAl-Qassam kwaida kuti mufti abvumire. Anokarakadza kuti kubatana kwavo kwakawedzera pashure pokunge
mhirizhonga ya1929, umo mumwe manyuko anotaura kuti varume vaAl-Qassam vakanga vari vanoshingaira. Vaviri vacho vakaparadzana pakati pemakore okuma30, zvichida nemhaka yokuita zvinhu nenzira yakazvimirira yaAl-Qassam. Apo Mufti akaramba zvirongwa zvake zvokutendeutsa mari yakatarwa kugadziridza mosque nokuda kwokutenga zvombo, Qassam akawana rutsigiro muArab Nationalist Istiqlal Party. Qassam akapfuurira kuedza kwake kuumba mubatanidzwa naMufti kuti arwise maBritish. Haana kubudirira nokuti Mufti, uyo aitungamirira Dare Rapamusoro revaMuslim, akanga achiri kuzvipira kunzira yezvamatongerwe enyika panguva iyoyo. Qassam akapfuurira nezvirongwa zvake zvokurwisa maBritish ari oga.