If ye are in a state of ceremonial impurity , bathe your whole body . But if ye are ill , or on a journey , or one of you cometh from offices of nature , or ye have been in contact with women , and ye find no water , then take for yourselves clean sand or earth , and rub therewith your faces and hands , Allah doth not wish to place you in a difficulty , but to make you clean , and to complete his favour to you , that ye may be grateful .