Relations between Muhammad's Islamic faction and the other members of the Quraysh rapidly deteriorated. Muhammad's open denunciation of the Meccan idols provoked hostile reactions, and he was mainly protected from physical harm for he belonged to the Banu Hashim; injuring Muhammad threatened to open up a blood feud between the Banu Hashim and the rest of the Quraysh, undermining the legitimacy and morality of the tribal leaders, thus, the Quraysh were reluctant to hurt or kill Muhammad. Regardless, several attempts were made at Muhammad's life. Traditional Islamic accounts maintain that the Quraysh first taunted Muslims by interrupting their prayers. Western scholars have accepted records of persecution and ill-treatment of Muhammad's followers. Many of Muhammad's followers were harassed, assaulted and forced into exile—and two, Yasir bin 'Amir and Sumayya bint Khabbat, were tortured and killed.