islam is a religion of peace, of brotherhood and of flexibility. the practice of islam is never rigid. there is always a leeway given so that islam dose not become a burden to the faithful. in prayers, in fasting, in the disbursement of the zakat , and in the performance of the Haj, islam allows for circumstance to dictate the practice. Thus, one can perform the solat in various ways,depending on the situation and one's own fitness; one fasts in accordance with one's physical capacity and the place where one is; one pays the zakat accordig to one's means; one perfroms the Haj if one i able to. it is only in the profession of faith in allah and the acceptance of muhammad as his rasul in one's heart that one cannot be flexible, though one may be forced to renounce openly.