Whenever Muhammad felt any relief from his fatal sickness , he would inquire as to whether Usama 's army had left for Syria yet .
Whenever Muhammad felt any relief from his fatal sickness , he would continue urging his companions to leave for Syria .
Whenever Muhammad felt any relief from his fatal sickness , he would inquire as to whether Usama 's army had left for Syria yet , and would continue urging his companions to leave for Syria .